www.diamondhead-usa.com

DIAMONDHEAD USA, Inc. INTRODUCTION - Diamondhead USA, is a West Springfield, Massachusetts company. We are nationally known and respected as a leading design innovator, manufacturer and distributor of top quality accessories for the Tactical Weapons industry. Diamondhead specializes in the M4/AR15 platform and any firearm that uses the M1913 Picatinny Rail system. The original Diamond Sights with the patented Diamond-shaped Apertures and Diamond-shaped upper housings - that launched the company - have now grown to over a hundred products. We offer a Lifetime Warranty on everything we manufacture. DISTRIBUTION - Diamondhead USA provides products to over a dozen OEM companies who offer our sights and rails as standard equipment. For example, STAG Arms chooses Diamondhead sights and handguards for their number one selling STAG Model 3 rifle and their Model 8 rifle. Windham Weaponry fits our sights and rails exclusively on their premier models. The growing list of companies that use our products includes many of the country s leading AR15 manufacturers. In addition to these OEM s, we are strongly affiliated with professionals in Government, Military and Law Enforcement such as the Connecticut State Police SWAT division, the California Dept. of Fish & Game and numerous others. Diamondhead products are distributed to retailers in the USA and internationally through the nation s major firearms distributors. We have demonstrated our products at major international arms shows such as the D.S.E.I. Expo in London and I.W.A. in Germany. John DeLuca. Multiple Weapons Expert/Instructor. Lt. Rank / Deputy Sheriff-30+ years. Team Leader: Tactical Response & Escaped Prisoner Apprehension Units. 7th Degree Black Belt Instructor. 41 years Martial Arts experience. Bladed Weapon Master Instructor MARKETING / PR - Diamondhead sights and rail systems are invariably chosen by the nation s top editors and photographers when they review a new firearm. We advertise regularly in the primary news-stand magazines and numerous on-line websites and our rapidly growing fan base is unanimous in its praise for our products. We recently posted a professionally shot video on our website, Facebook and YouTube sites, featuring members of the United States Special Forces using Diamondhead products. INNOVATIONS - New this year are two industry firsts, both incorporating the renowned Diamond Integrated Sighting System. The D-45 (45 degree off-set) Swing Sights are the first and only sights that can stow flat yet be deployed and used in conjunction with an optic for CQC/CQB target acquisition. The operator simply rolls the weapon 45 degrees counter clockwise and switches sighting from optic to D-45 s. Our new Polymer Diamond Front & Rear Flip-Up Sights are creating a strong reaction in the retail sector especially as they include NiteBrite photoluminescent inserts an inexpensive way to have a Tritium-type (reduced-light) sighting system. The Polymer Diamond Sights are extremely high quality and very competitively priced. Watch for more new and innovative products in 2014. Check out our website at www.diamondhead-usa.com or our Facebook and Youtube sites. MISSION - Diamondhead USA is dedicated to offer the most innovative, reliable and cost effective products and support them with exemplary, industry-leading customer service. INDUSTRY PARTNERS John DeLuca President - Diamondhead USA, Inc. Diamondhead USA is proud to be an official supplier to these and other respected Manufacturers, Distributors and Operators CATALOG CONTENTS P 3... About Diamondhead, Industry Partners & Contents P 5... Integrated Sighting Systems P 7... Features of all Front & Rear Combat Sights P 7... Diamond Front & Rear Combat Sights P 9... Auto-Ranger Front Sight (w/600yd AR-BDC) P 9... Gas Block Front Sights for AR15 & AR10 P 11... Hybrid & Classic Combat Sights P 13... D-45 (45 Degree Off-Set) Swing Sights P 15... Polymer Diamond Flip-Up Sights (NEW) P 19... VRS T and X Free-Floating Handguards P 21... VRS TD and XD Free-Floating Handguards P 21... Ruger SR-22 Rails P 23... VRS DI Modular Drop-In Handguard System P 25... VRS Rail Accessories P 25... KRISS Handguard (NEW) P 27... Custom Shop - M4 & 3-Gun Upper Receivers P 29... Gas Blocks, Sight Tool & Promotional items P 31... Product Listing & Price List 2014 Diamondhead USA, Inc. W. Springfield, Mass. Diamondhead Products are all Made in the USA Diamondhead is a Registered Trademark www.diamondhead-usa.com 3

INTEGRATED SIGHTING SYSTEMS (I.S.S.) Diamondhead s DIAMOND Combat Sights, the D-45, MICRO-D, and Gas Block Sights are an innovative design for M4/AR15 variants. When paired together, they create the Diamondhead Integrated Sighting System (I.S.S.). By incorporating the Rear Sight s original, patented Diamond-shaped Apertures & Diamondshaped Upper Housing with the Front Sight s proprietary, patented Diamond-shaped Upper Housing, the eye can place the front sight post perfectly in the center of the rear aperture. The result - Faster Target Acquisition and Centering. Diamondhead s I.S.S. has received critical acclaim from industry writers as well as Military and Law Enforcement professionals, many of whom prefer to use the Diamondhead I.S.S. as their primary sighting system. D-45 I.S.S. ONLY SOLD AS AN I.S.S. SET 1799 (BK) Details - Page 13 DIAMOND I.S.S. The Choice of Windham Weaponry for the C.D.I. SOLD AS AN I.S.S. SET AND INDIVIDUALLY 1199 (BK) 1198 (FDE) Details - Page 7 Combine complementary Front and Rear Sights to create the Diamondhead Integrated Sighting System MICRO-D I.S.S. The Choice of California Dept. of Fish & Game ONLY SOLD AS AN I.S.S. SET For POF.308 and Raised Rail Systems Only 1089 (BK) 1088 (FDE) Standard Features - Page 7 Gas Block I.S.S. for AR15 & AR10 The Choice of STAG Arms for the Model 3 SOLD AS AN I.S.S. SET AND INDIVIDUALLY 1599 - Model 3/AR15 (BK) 1699 - AR10 (BK) Details - Page 9 1199 (857880003115) DIAMOND I.S.S. w/ Diamond Front & Rear (Black) $238 1198 (857880003399) DIAMOND I.S.S. w/ Diamond Front & (Flat Dark Earth) $238 1799 (857880003146) D-45 I.S.S. w/ Diamond D-45 Front & Rear (Black) $298 1599 (857880003122) Gas Block I.S.S. w/ Diamond Gas Block (AR15) Front & Diamond Rear $248 1699 (857880003139) Gas Block I.S.S. w/ Diamond Gas Block (AR10) Front & Diamond Rear $248 1089 (857880003375) MICRO-D I.S.S. w/ Diamond Front & Rear (Black) $238 1088 (857880003382) MICRO-D I.S.S. w/ Diamond Front & Rear (Flat Dark Earth) $238 www.diamondhead-usa.com 5

DIAMOND SIGHTS Diamondhead s flagship DIAMOND Flip-Up Front and Rear Sight s revolutionary design incorporate the original and patented Diamond-shaped Apertures and Housing - allowing the eye to place the front sight post in the exact center of the rear aperture faster and with greater precision. The Rear Sight s Diamond-shaped Upper Housing (Pat.) enables fast CQC target acquisition with the apertures flat. Diamond sights are compatible with all Diamondhead VRS Free-Floating & Drop-In Handguard Systems FRONT SIGHT available with Tritium insert The innovative Diamond-shaped upper housing (Pat.) enables fast CQC sighting with the apertures flat 1057 Black 1058 FDE 1199 Diamond I.S.S. (BK) 1051 - Diamond Front Sight (BK) 1052 - Diamond Front Sight (FDE) FEATURES OF DIAMOND FRONT SIGHT. Patented Diamond-shaped Upper Housing frames & centers the target with speed & ease. Secure and accurate elevation adjustment UNIVERSAL M4 SIGHT TOOL (for all Sights) 3301. Adjusts rear sight windage and front sight elevation on all A2 and A4 front sights 1101 - Diamond Rear Sight (BK) 1102 - Diamond Rear Sight (FDE) FEATURES OF DIAMOND REAR SIGHT. Patented Diamond-shaped Apertures for faster target acquisition & centering. Patented Diamond-shaped Upper Housing w i t h horizon bars. (Unique design enables accurate CQC aiming with apertures flat). Dual same plane short and long range apertures (at exact same height of factory A2 sights). Deploys and stows with small or large aperture active FLAT DARK EARTH OPTION FEATURES OF DIAMONDHEAD FRONT & REAR COMBAT SIGHTS (Diamond, Micro-D, Auto-Ranger, Gas Block, Hybrid, Classic, and D-45). Flips up quickly and smoothly for rapid deployment. Folds down fast with the push of a button. Proprietary deployment system ensures sight stays up securely & remains zeroed in combat situations 1198 (FDE) Front & Rear Diamond Sights and Micro-D Integrated Sighting Systems are also available in Flat Dark Earth. Diamondhead Flip-Up Front & Rear Diamond, D-45, Gas Block, Micro-D, and Polymer sights are designed to work together to create the Diamondhead Integrated Sighting System. Mil. Spec. Type III hard coat anodized 6061 T6 aircraft aluminum, finished in Black or Flat Dark Earth (FDE)*. Easy installation with proprietary clamping system, providing secure attachment to all Mil. Std. 1913 Picatinny Rails. Combat Durable * check website for up to date FDE availability Upper Receiver Kits (Page 27) offer Diamond Sights as an option 1101 (857880003016) Diamond Rear Sight $129 1102 (857880003344) Diamond Rear Sight (FDE) $129 1051 (857880003023) Diamond Front Sight $109 1052 (857880003351) Diamond Front Sight (FDE) $109 1057 (857880003368) Diamond Front Sight w/tritium $169 1058 (857880003566) Diamond Front Sight w/tritium (FDE) $169 1199 (857880003115) Diamond I.S.S. $238 1198 (857880003399) Diamond I.S.S. (FDE) $238 3301 (857880003450) Universal M4 Sight Tool $9.95 www.diamondhead-usa.com 7

AUTO-RANGER FRONT SIGHT Diamondhead s Patented Flip-Up Front AUTO-RANGER Front Sight is the first iron sight to offer automatic estimation of man-sized targets and quick-ranging, calibrating and dead-on accuracy to 600yds. Simply rotate through the front sight post selections until the post that matches the size of the target is found. The AUTO-RANGER offers the proprietary (Pat.) Diamondhead Auto-Ranging-Bullet Drop Compensating (AR-BDC ) front sight system (that adjusts for bullet drop for M4 5.56 ballistics) for reliable short & long-range accuracy. FEATURES OF AUTO-RANGER FRONT SIGHT (Pat.). 600 yard Auto-Ranging Bullet Drop Compensating (AR-BDC ) front sight system. Automatically estimates distances of man-sized targets and adjusts for bullet drop for M4 5.56 ballistics to 600 yards. AR-BDC System allows for reliable short & long range accuracy. Simple to operate... turn the calibrated knob and shoot. See Diamond Sights (Page 7) for standard features 200 yard target acquisition example Measure Target Aim and Fire Model 3 1151 Auto-Ranger Front Sight 400 yard target acquisition example 1151 Auto-Ranger Front Sight Dial past 200yd. Dial past 300yd. 400yd post matches Aim and Fire 1151 (857880003030) Auto-Ranger Front Sight w/ar-bdc $189 STAG Arms Model 3 with VRS-DI Modular Drop-In Handguard and (AR15) Gas Block Integrated Sighting System (1599) GAS BLOCK FRONT SIGHTS Diamondhead s Gas Block Front Sight for the STAG Arms Model 3 & AR15 mounts directly to the existing railed (reduced height) gas block. The gas block sight comprises a proprietary Diamondhead sight base (of increased height to compensate for lower gas block) and the patented Diamond-shaped upper housing. Also available with extra high base for AR10 variants. AR-10 Model 3 Compatible FEATURES OF GAS BLOCK FRONT SIGHTS:. AR-15 Mounts directly to a railed, reduced height gas block, providing secure and solid sight attachment to barrel. Allows for sight stability, eliminates potential handguard movement and holds a true zero. Taller sight to compensate for (below receiver height) gas block. STAG Arms Model 3/AR15/M4 & AR10/.308 gas block options. See Diamond Sights (Page 7) for standard features & Sight Tool 1651 Gas Block Sight for AR10/.308 1551 (857880003092) Gas Block Front Sight (for STAG Model 3 & AR15) $119 1651 (857880003108) Gas Block Front Sight (for AR10/.308) $119 1599 (857880003122) Gas Block I.S.S. (AR15/M4) $248 1699 (857880003139) Gas Block I.S.S. (AR10/.308) $248 1551 Gas Block Sight for STAG Arms Model 3 & AR15 8 www.diamondhead-usa.com 9

HYBRID and CLASSIC SIGHTS Diamondhead is best known for its revolutionary, patented, Diamond-shaped apertures (Pat. & Pat. Pend.) and upper housings and the related Integrated Sighting System. The Classic line of sights acknowledges the need to offer the traditional round apertures with a choice of HK and M4 front sight profiles, while the Hybrid sights unique design give the option to use both Diamond-sighting as well as round-aperture sighting. The Hybrid and Classic Rear Combat Sights are now offered with the patented Diamond-shaped Upper Housing HYBRID FRONT SIGHT HYBRID REAR SIGHT The HYBRID Front Sight incorporates a round inner profile with the proprietary Diamond-shaped outer upper housing The HYBRID Rear Sight incorporates a traditional round aperture (for fast CQC) with the proprietary diamond-shaped aperture and re-styled Diamondshaped upper housing (for accurate long range) 1251 Hybrid Front Sight 1201 Hybrid Rear Sight 1201 (857880003047) Hybrid Rear Sight $129 1251 (857880003054) Hybrid Front Sight $109 See Diamond Sights (Page 7) for standard features & Sight Tool CLASSIC FRONT SIGHT The CLASSIC Front Sight is offered with an HK or M4 style upper housing on a proprietary Diamondhead sight base CLASSIC REAR SIGHT The CLASSIC Rear Sight offers traditional round apertures with a choice of the standard Diamondshaped upper housing or narrow (goal-post style) upper housing HK M4 1351 Classic Front Sight (HK) 1361 Classic Front Sight (M4) 1311 Classic Rear Sight (Narrow goal-post housing) 1301 Classic Rear Sight (Diamond-shaped housing) 1301 (857880003061) Classic Rear Sight (Diamond) $129 1311 (857880003573) Classic Rear Sight (Narrow) $129 1351 (857880003078) Classic Front Sight (HK) $109 1361 (857880003085) Classic Front Sight (M4) $109 www.diamondhead-usa.com 11

D-45 SWING SIGHTS D -45 45 o Off-Set Swing Sights Diamondhead s revolutionary D-45 Integrated Sighting takes sighting to a new level. If SystemTM a fast, accurate CQC target acquisition is needed or the optic goes down, simply flip out the D-45 Sights and roll the firearm 45 degrees counter-clockwise. The D-45 Rear Sight s patented Diamond-shaped apertures TM and Diamond-shaped upper housing allow the eye to place the D-45 Front Sight s post in the exact center of the Rear Sight s aperture. The spring-loaded D-45 deploys with the push of a button and stows flat. FEATURES. Stows like a Folding Sight. For CQC or if Optic Fails. Optics Compatible. Lightning-Fast Deployment to 45 Degrees. Rear Sight s Diamond-shaped upper housing enables fast CQC with apertures flat D-45 Front Sight D-45 Rear Sight. True Bore Alignment. No Snag Hazard. See Diamond Sights (Page 7) for standard features D-45 Rear Sight stows flat behind Optic 1799 D-45 Integrated Sighting System (Bk) The Rear Sight s innovative Diamond-shaped upper housing enables fast CQC aiming with the apertures turned flat D-45 Front Sight D-45 Rear Sight Custom Upper Receivers (Page 27) offer D-45 Sights as an option 1799 (857880003146) D-45 Integrated Sighting System (Bk) $298 www.diamondhead-usa.com 13

Introducing... POLYMER SIGHTS POLYMER Flip-Up Diamond Sights Pat. Pend. Diamondhead s Polymer (Flip-Up) Diamond Sights are designed for all AR-15 s and Modern Sporting Rifles. The Polymer sights are fitted with NiteBrite photoluminescent inserts (the inexpensive alternative to Tritium) MAIN FEATURES (Front & Rear Sights):. Advanced Polymer / Composite construction for strength, light weight and exceptional durability. NiteBrite - Photoluminescent Inserts - can be charged by natural light or with a flashlight. Spring-loaded sight flips up quickly with the push of a button, stays up securely and folds down flat 1401 1451 shown - Polymer Diamond Sights & VRS-X (10.25 ) Free-Floating Handguard POLYMER Diamond FRONT SIGHT The Polymer (Flip-Up) Diamond Front Sight features the patented Diamond-shaped upper housing. It can be paired with the Polymer Diamond Rear Sight and is suitable for firearms fitted with a Diamondhead VRS handguard or any M1913 Picatinny Rail System NOT SUITABLE FOR GAS BLOCK SIGHT BASES (due to heat issues) FEATURES:. Patented Diamond-shaped Upper Housing for fast alignment with the Polymer Diamond Rear Sight. Easy Elevation adjustment (with no tools) For AR15 & all Modern Sporting Rifles LIFETIME WARRANTY INTEGRATED SIGHTING SYSTEM EQUIPPED POLYMER Diamond REAR SIGHT The Polymer (Flip-Up) Diamond Rear Sight incorporates the patented Diamond-shaped Apertures & Diamond-shaped upper housing - for faster target acquisition & centering. It is suitable for firearms fitted with a factory handguard and a fixed front sight, or can be paired with any Picatinny rail-mounted front sight* FEATURES:. Patented Diamond-shaped Apertures & Upper Housing for fast alignment with any Diamondhead Front Sight*. Dual same plane long and short range apertures (at exact same height as factory A2 sights). Defaults to either small or large aperture. Secure and accurate 0.5MOA windage adjustment 1451 1401 * The Polymer Rear Diamond Sight may be used with the following Front Sights: 1451 Polymer Diamond Sight, 1101 Diamond Combat Sight, 1151 Auto- Ranger Combat Sight, 1551 Gas Block Combat Sight, or any fixed front sight 1401 (857880003498) Polymer Rear Sight $69 1451 (857880003504) Polymer Front Sight $49 www.diamondhead-usa.com 15

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VRS T & VRS X FREE-FLOATING HANDGUARDS Diamondhead s innovative VRS T & VRS X Free Floating Handguards offer an uninterrupted rail extension and handguard in perfect alignment with the host weapon s flat top receiver. VRS handguards replace the factory delta ring and barrel nut. The VRS Free Floating Handguard System provides the same flexibility of use as Diamondhead s renowned VRS Drop-In System. Simply attach rails and bumpers to the VRS for the required rail-mounted accessories. VRS T Free-Floating Handguards VRS T & X Available in 10.25 13.5 & 15.0 * Lengths INCLUDED Replacement Barrel Nut 2241 VRS T 15.0 Handguard (*18-20 barrels only) 2231 VRS T 13.5 Handguard FEATURES - VRS T & X HANDGUARDS:. Designed to give a factory installed appearance to the rifle. Requires removal of both delta ring and factory barrel nut and replacement of front sight with a low profile gas block*. Proprietary replacement barrel nut included that allows for easy installation and elimination of barrel nut timing issues. Mounts on barrels with low profile gas block, or can replace fixed front sight (using basic punch, hammer) with a low profile gas block* VRS X 2211 VRS T 10.25 Handguard Free-Floating Handguards STANDARD FEATURES - VRS T & X and VRS TD & XD (Page 21). Sturdy, lightweight free float design. Improves accuracy and provides exceptional airflow to keep barrel cooler. Comfortable rounded triangular shape (T & TD) and round shape (X & XD). Flush mounted top rail for a monolithic appearance. Lightning fast configuration changes. Uninterrupted mounting surface for optics or other accessories. Improves comfort and ease of shooting while allowing for personal modification with rail accessories (rails & bumpers). Customize for specific applications. Add more rails as additional accessories are needed. Mix full length and short rails and bumpers to suit. Proprietary clamping system for rigid, secure attachment. Mil. Spec. Type III anodized 6061 aluminum construction. Mil. Std. 1913 Picatinny rail dimensions. Fits all M4/AR15/M16 variants. Combat durable ACCESSORY RAILS & BUMPERS for VRS T & X Free-Floating Rail Systems Details - Page 25 2141 VRS X 15.0 Handguard (* for 16 & 18 barrels) 2131 VRS X 13.5 Handguard 2111 VRS X 10.25 Handguard Upper Receiver Kits (Page 25) all include VRS T or VRS X Handguards 2211 (857880003184) VRS T Free-Floating Handguard (10.25 ) $169 2231 (857880003191) VRS T Free-Floating Handguard (13.5 ) $189 2241 (857880003207) VRS T Free-Floating Handguard (15.0 ) $209 2111 (857880003153) VRS X Free-Floating Handguard (10.25 ) $159 2131 (857880003160) VRS X Free-Floating Handguard (13.5 ) $179 2141 (857880003177) VRS X Free-Floating Handguard (15.0 ) $199 3131 (857880003337) Gas Block (Low Profile) $ 35 *LOW PROFILE GAS BLOCK for VRS T/X/TD/XD Free-Floating Rail Systems Details - Page 29 www.diamondhead-usa.com 19

VRS TD & VRS XD FREE-FLOATING HANDGUARDS Diamondhead s innovative VRS TD & VRS XD Free Floating Handguards offer an uninterrupted rail extension and handguard in perfect alignment with the host weapon s flat top receiver... with no cutting of the delta ring or any permanent weapon modications. The VRS Free Floating Handguard System provides the same flexibility of use as Diamondhead s renowned VRS Drop-In System. Simply attach rails and bumpers to the VRS for the required accessories. VRS TD Free-Floating Handguards 2281 VRS TD 13.0 Handguard FEATURES:. Easy retrofit for delta ring equipped AR15/M4 rifle or carbine. No cutting of delta ring or permanent weapon modifications. Comfortable rounded triangular shape (TD) & round shape (XD). Mounts on barrels with low profile gas block, or can replace fixed front sight (using basic punch, hammer) with a low profile gas block (not included) 2271 VRS TD 10 Handguard VRS XD Free-Floating Handguards 2181 VRS XD 14.5 Handguard STANDARD FEATURES - SAME AS VRS T & X (Page 19) ACCESSORY RAILS & BUMPERS for VRS TD & XD Free-Floating Rail Systems Details - Page 25 2171 VRS XD 11.0 Handguard 2271 (857880003436) VRS TD Free-Floating Handguard (10.0 ) $199 2281 (857880003443) VRS TD Free-Floating Handguard (13.0 ) $219 2171 (857880003412) VRS XD Free-Floating Handguard (11.0 ) $189 2181 (857880003429) VRS XD Free-Floating Handguard (14.5 ) $209 3131 (857880003337) Gas Block (Low Profile) $ 39 LOW PROFILE GAS BLOCK for VRS TD & XD Free-Floating Rail Systems Details - Page 29 RUGER SR-22 RAILS Diamondhead s exclusive Ruger SR-22 rails are the official after market SR-22 accessory rail. Accessorize the Ruger SR-22 by combining a long or short top rail with side / bottom rails. Use any combination as needed for sights and other rail accessories. 2901 Long Top Rail 2902 Short Top Rail Ruger SR-22 w/long Top Rail & Side/Bottom Rails 2901 (857880003467) SR-22 Long Top Rail $39.95 2902 (857880003474) SR-22 Short Top Rail $19.95 2903 (857880003481) SR-22 Side/Bottom Rail $14.95 2903 Side Bottom Rail www.diamondhead-usa.com 21

VRS DI MODULAR DROP-IN HANDGUARD Diamondhead s VRS 7 Modular Drop-In Handguard platform offers limitless fore-end versatility for the M4. With lightning-fast installation and numerous configurations for accessories, the Diamondhead VRS DI sets a new standard for drop-in rail systems. The VRS DI is offered standard on the best-selling STAG Arms Model 3 The Most Versatile Modular DROP-IN Handguard System - - can be used with or without rails Receiver Height Railed Gas Block Drops into carbines without removal of existing delta ring 3101 Details - Page 29 Shown: STAG Arms Model 3 fitted with STAG VRS-DI 7 Handguard and Diamondhead Auto-Ranger Front Combat Sight (Page 9) Shown: STAG Arms Model 3 fitted with the VRS-DI 7 Drop-In Handguard, a Receiver Height Gas Block & the Diamond Integrated Sighting System FEATURES of the VRS DI - Dave Spaulding ( Special Weapons for Military & Police) VRS DI 7 Base Handguard VRS DI with Long Rail. Customize the VRS DI for specific applications. Mix short & medium rails and bumpers. Add more rails as additional accessories are needed (NOTE: the VRS-DI is not recommended for optics or sights). Fast configuration changes. Mil. Std. 1913 Picatinny rail dimensions. Fits all AR15/M4 variants. Mil. Spec. Type III hard coat anodized 6061 T6 aluminum construction. Combat durable. Use with a Diamondhead Receiver Height Gas Block (3101) to fit any Diamondhead Front Sight VRS DI with Short Rail VRS DI with Long Bumper - the choice of VRS DI Accessories - Page 25 2001 (857880003214) VRS-DI (7 ) Drop-In Handguard $109 3101 (857880003320) Gas Block (Receiver Height) $ 59 Photo courtesy of Windham Weaponry, Inc. www.diamondhead-usa.com 23

VRS RAIL ACCESSORIES Accessorize the Model 3 and VRS Free-Floating or Drop-In Handguards for Specific Applications *XL (9 ) Rails & XL Rail Kit are available for VRS Free -Floating Handguards Long Rails Short and Long Bumpers give a smooth ergonomic grip and appearance to the handguard 2911 Short Rails 2791 Rail & Bumper Kits include hex screws & Allen key Long Bumpers Short Bumpers 2891 2821 (857880003238) VRS Short Rail (Single) $15 2831 (857880003221) VRS Short Rail Kit (3) $39 2711 (857880003276) VRS Long Rail (Single) $22 2731 (857880003269) VRS Long Rail Kit (3) $59 2911 (857880003313) VRS XL (9 ) Rail (Single)* $29 2931 (857880003306) VRS XL (9 ) Rail Kit (3)* $79 2891 (857880003252) VRS Short Bumper (Single) $ 8 2801 (857880003245) VRS Short Bumper Kit (3) $22 2791 (857880003290) VRS Long Bumper (Single) $15 2701 (857880003283) VRS Long Bumper Kit (3) $39 KRISS HANDGUARD FEATURES:. Only for Kriss Vector CRB.45ACP Model with 16 shrouded barrel. Provides monolithic appearance - allows for front sight to be mounted further out and co-witness with standard rear sights. Mil. Spec. Picatinny machined top rail that extends an additional 6 from the end of the receiver. Bottom of the handguard is tapped for accessory rails (see above). Installs with with four screws into receiver accessory holes; no modification needed. Mil. Spec. Type III anodized 6061 aluminum construction. Combat durable Free-Floating Handguard for the KRISS Vector CRB.45ACP 7381 (857880003580) KRISS Vector CRB.45 Handguard $179 www.diamondhead-usa.com 25

Diamondhead s Custom Shop offers a wide choice of AR15/M4 Upper Receivers. The individually-built receivers are based on the STAG Arms M4 upper (16 barrel) and the 3-Gun upper (18 barrel). The M4 base can be equipped with a choice of VRS T or VRS X handguard in 10.25, 13.5 (& 15.0 X only) lengths. The 18 barrel of the 3-Gun base accepts the 15 VRS T or VRS X handguard. A pair of Diamond Sights or D-45 (optics-compatible) Swing Sights is offered. All Receivers come in Pre-Ban or Compliant (for MA, CT, NY, & NJ) 16 M4 and 18 3-Gun UPPER RECEIVERS UPPER RECEIVERS Custom Shop Equipped M4 and 3-Gun Receiver Base by Most Popular Configuration FEATURES: 16 M4 Upper Receiver. STAG Arms base w/16 Mil. Spec. M4 carbine barrel. Flash Hider (or pinned muzzle brake on compliant models). Diamondhead Parkerized Steel Low Profile Gas Block. Choice of Handguards: Triangular VRS T in 10.25 or 13.5 or Round VRS X in 10.25, 13.5 & 15.0 (see P 23). Diamondhead Integrated Sighting System featuring: Diamond Front and Rear Flip-Up Sights (see P 7) or Optics-compatible D45 Swing Sights (see P 13) 18 3-Gun Upper Receiver. STAG Arms base w/18 stainless-steel, fluted barrel, 1/8 twist. Special Flash Hider (or pinned muzzle brake on compliant models). Diamondhead Parkerized Steel Low-Profile Gas Block. Choice of Handguards: Triangular VRS T in 15 or Round VRS X in 15 (see P 23). Diamondhead Integrated Sighting System featuring: Optics-compatible D45 Swing Sights (see P 13) or Diamond Front and Rear Flip-Up Sights (see P 7) SAMPLE UPPER RECEIVER CONFIGURATIONS: 16 M4 Upper Receiver base with Diamondhead VRS X (10.25 ) Handguard & Diamond Sights (5001) Most Popular Configuration 16 M4 Upper Receiver base with Diamondhead VRS T (13.5 ) Handguard & Diamond Sights (5211) 18 3-Gun Receiver base with Diamondhead VRS T (15.0 ) Handguard & D-45 Swing Sights (5702) AVAILABLE ACCESSORIES RAILS & BUMPERS for VRS T & X Free-Floating Rail Systems Details - Page 25 SKU BASE HANDGUARD SIGHTS MSRP 5001 M4 Upper VRS X (10.25 ) Diamond Sights $ 899 5002 M4 Upper VRS X (10.25 ) D-45 Sights $ 959 5011 M4 Upper VRS X (13.5 ) Diamond Sights $ 919 5012 M4 Upper VRS X (13.5 ) D-45 Sights $ 979 5021 M4 Upper VRS X (15.0 ) Diamond Sights $ 939 5022 M4 Upper VRS X (15.0 ) D-45 Sights $ 999 5201 M4 Upper VRS T (10.25 ) Diamond Sights $ 909 5202 M4 Upper VRS T (10.25 ) D-45 Sights $ 969 5211 M4 Upper VRS T (13.5 ) Diamond Sights $ 929 5212 M4 Upper VRS T (13.5 ) D-45 Sights $ 989 5501 3-Gun Upper VRS X (15.0 ) Diamond Sights $1,109 5502 3-Gun Upper VRS X (15.0 ) D-45 Sights $1,169 5701 3-Gun Upper VRS T (15.0 ) Diamond Sights $1,119 5702 3-Gun Upper VRS T (15.0 ) D-45 Sights $1,179 POST-BAN COMPLIANT RECEIVERS For MA, CT, NY & NJ Add $50 (to Pre-Ban Model MSRP) Other States: Check Local Statutes Upper Receivers availability, prices and specifications subject to change www.diamondhead-usa.com 27

GAS BLOCKS & ACCESSORIES Diamondhead s Railed Gas Block replaces an existing fixed front sight and allows for the fast installation of the VRS Drop-In Rail System. The railed gas block allows for the secure installation of a folding front sight. The Diamondhead railed gas block installs quickly with two fastening screws. It is precision bored to.750 diameter and manufactured from Parkerized steel. The Low Profile Gas Block is needed when installing the VRS Free-Floating Handguard. RECEIVER HEIGHT GAS BLOCK (with Rail Overhang) for VRS DI (Drop-In) Rail Systems 3101 VRS FEATURES:. Replaces existing front sight/gas block and allows for the mounting of the Diamondhead VRS Drop-In Rail System. Proprietary over-hang rail design allows for gas block to fit flush up to the Drop-In rail... leaving a smooth, monolithic appearance. Works with all standard Drop-In rail systems of all lengths. Gas Block Rail provides a secure mounting platform for standardheight folding front sights (e.g. Diamond Front Sight). Clamps to barrel with two fastening screws. Precision machined to.750 bore diameter. Manufactured from Parkerized steel LOW PROFILE GAS BLOCK for VRS T, X, TD, & XD Free-Floating Rail Systems FEATURES:. Replaces existing front sight/gas block and allows for the mounting of the Diamondhead VRS Free-Floating Rail System. Works with all standard Free-Floating rail systems of all lengths. Clamps to barrel with two fastening screws. Precision machined to.750 bore diameter. Manufactured from Parkerized steel 3301 UNIVERSAL M4 SIGHT TOOL VRS DI 3131. Adjusts A2 & A4 front sight elevation and rear sight windage 3101 (857880003320) Gas Block (Receiver Height) $59 3131 (857880003337) Gas Block (Low Profile) $35 3301 (857880003450) Universal M4 Sight Tool $9.95 PROMOTIONAL ITEMS Diamondhead (crack & peel) decals 6 X 6 12 X 3 Competition Headwear Hat in Desert Sand with Diamondhead name & logo embroidered in Olive Drab. Rear velcro adjustment. One Size Fits All (OSFA) Check our website for additional colors 100% cotton TEE with Small Diamondhead logo front and larger on rear 4111-15 Tee Shirt - Black w/logo front & back S-XL $23 / XXL $25 4208 Hat - Desert Sand with logo (OSFA) $20 4513 Diamondhead crack & peel Decal 6 X 6 $ 5 4514 Diamondhead crack & peel Decal 12 X 3 $ 5 www.diamondhead-usa.com 29

PRICE LIST (SIGHTS & RAILS) LIFETIME WARRANTY If a Diamondhead product fails at any time due to defects in materials or workmanship, it will be repaired or replaced at no charge (See Policies section of our website - some restrictions apply) Product availability, descriptions, features, and MSRP subject to change without notice. Check the web site for latest information before ordering www.diamondhead-usa.com 31