Description
Heresy Design™ 14.5” 5.56 NATO Conversion Kit
Suppressor Ready AUG® in Under 60-Seconds
THIS ITEM IS A COSMETIC BLEM ITEM, WHICH MAY HAVE SCRATCHES, DENTS, TOOL MARKS, AND/OR SURFACE FINISH VARIATIONS. THESE BARRELS DO NOT HAVE FUNCTIONALITY DEFECTS, AND HOLD OUR LIMITED LIFETIME WARRANTY.
The Heresy Design™ 14.5” 5.56 NATO Conversion Kit is the ultimate upgrade for Steyr® AUG® A3 M1 owners looking to unlock their firearm’s full potential. Engineered for suppressor use, this conversion kit allows you to seamlessly switch calibers and gas settings for suppressed use with minimal gas blowback. Available right at Heresy Design.
PLEASE NOTE WE ARE UNABLE TO SHIP THIS PRODUCT TO CERTAIN STATES. FOR ADDITIONAL INFORMATION, PLEASE VISIT OUR FAQ PAGE.
Built for Performance
At the core of the Heresy Design™ 5.56 NATO Conversion Kit is a 14.5” barrel equipped with a restrictive 3-setting adjustable gas system. The restrictive gas system ensures a quiet shooting experience by eliminating piston pop and reducing gas block area venting noise. Installation is quick and straightforward, requiring no modifications to your firearm. In under 60 seconds, you are ready to hit the range.
Read coverage on the Heresy Design™ Conversion Kit from Athlon Outdoors here.
5.56 NATO Conversion at a Glance
14.5” 5.56 NATO Barrel:
1/2×28 threaded barrel with upgraded gas piston system
Precision Machined:
Seamless install without any modifications needed
Enhanced Suppressor Compatibility:
3-setting, easy-to-adjust gas system
Durable Construction:
Isonite coated wear parts, Anodized Aluminum quad rails, Limited lifetime warranty
What’s Included:
14.5” 5.56×45 NATO Barrel
Note: Firearms and suppressors shown in images are for display purposes only. Follow all local, state, and federal regulations regarding firearm use.
14.5″ 5.56 NATO Conversion Kit Specifications:
SKU: HB14A
UPC: 850055721029
Caliber: 5.56×45 NATO
Barrel Length: 14.5″
Barrel Material: 41V50
Barrel Finish: Isonite
Rifling Twist: 1:8
Thread Pitch: 1/2×28
Muzzle Device: A2 Flash Hider
Overall Length: 17.5″
Weight: 2 lb. 8.9 oz.
Compatibility: A3 M1 Standard and NATO stocks






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