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Heresy Design 16.3in .300BLK AUG Conversion Kit

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Heresy Design 16.3in .300BLK AUG Conversion Kit, Black, HB16B
Heresy Design 16.3in .300BLK AUG Conversion Kit, Black, HB16B
Heresy Design 16.3in .300BLK AUG Conversion Kit, Black, HB16B
Heresy Design 16.3in .300BLK AUG Conversion Kit, Black, HB16B
Heresy Design 16.3in .300BLK AUG Conversion Kit, Black, HB16B
Heresy Design 16.3in .300BLK AUG Conversion Kit, Black, HB16B
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Heresy Design 16.3in .300BLK AUG Conversion Kit, Black, HB16B
Heresy Design 16.3in .300BLK AUG Conversion Kit, Black, HB16B
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Heresy Design 16.3in .300BLK AUG Conversion Kit, Black, HB16B
Heresy Design 16.3in .300BLK AUG Conversion Kit, Black, HB16B
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Heresy Design 16.3in .300BLK AUG Conversion Kit, Black, HB16B
Heresy Design 16.3in .300BLK AUG Conversion Kit, Black, HB16B
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Heresy Design 16.3in .300BLK AUG Conversion Kit, Black, HB16B
Heresy Design 16.3in .300BLK AUG Conversion Kit, Black, HB16B
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Heresy Design 16.3in .300BLK AUG Conversion Kit, Black, HB16B

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Government Restriction Government Restriction
Questions & Answers
Color:
Black
Gun Make:
Steyr
Gun Model:
Steyr AUG
Caliber:
.300 AAC Blackout
Magazine Capacity:
0 Round
Condition Details:
Open Box
Condition Quality:
Excellent
Condition:
Used
Country of Origin:
USA

Code: 6KH-CNC-EEF-HB16B-0RD-EDEMO-OB-B

MPN: HB16B-EDEMO

Product No Longer Available

Product Info for Heresy Design 16.3in .300BLK AUG Conversion Kit

The Heresy Design 16.3'' .300BLK Conversion Kit is the ultimate upgrade for Steyr AUG A3 M1 owners looking to unlock their firearms full potential. Engineered for suppressor use, this conversion kit allows you to seamlessly switch calibers and gas settings, shoot subsonic ammunition, and optimize your AUG for suppressed use with minimal gas blowback. At the core of the Heresy Design .300BLK Conversion Kit is a 16.3'' barrel equipped with a restrictive 3-setting adjustable gas system and a pistol-length gas port. This innovative design allows AUG users to shoot both supersonic and subsonic .300BLK ammunition. 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.image

Features of Heresy Design 16.3in .300BLK AUG Conversion Kit

  • 5/8x24 threaded barrel with pistol length gas port and upgraded gas piston system
  • Seamless install without any modifications needed
  • 3-setting, easy-to-adjust gas system
  • Isonite coated wear parts
  • Anodized Aluminum quad rails
  • Limited lifetime warranty

Package Contents:

  • Heresy Design 16.3in .300BLK AUG Conversion Kit
  • Manual
  • Sticker

Ammunition

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Freedom Munitions .300 Blackout 147 Grain Full Metal Jacket Brass Rifle Ammunition
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Remington .300 AAC Blackout UMC 220 Grain Open Tip Flat Base Brass Rifle Ammunition
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Hornady Frontier .300 AAC Blackout 125 Grain Full Metal Jacket Centerfire Rifle Ammunition
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$1.20 - $1.45/Round
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13% Coupon
Barnes Precision Match .300 AAC Blackout 125 grain Match Burner Open Tip Match Boat Tail Centerfire Rifle Ammunition
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$2.05/Round
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Atomic Ammunition Subsonic .300 AAC Blackout 220 grain Boat Tail Hollow Point Brass Cased Rifle Ammunition
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Remington UMC Rifle .300 AAC Blackout 220 Grain Open Tip Flat Base Rifle Ammunition
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Winchester Super Suppressed .300 AAC Blackout 200 grain Full Metal Jacket Centerfire Rifle Ammo, 20 Rounds, SUP300BLK
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$24.49
$1.22/Round
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Barnes Vor-TxRifle Cartridges, .300 AAC Blackout, TAC-TX Flat Base, 110 Grain, 20 - Rounds, 21548
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$2.37/Round
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Hornady Custom .300 AAC Blackout 135 grain Flex Tip eXpanding Brass Cased Centerfire Rifle Ammo, 20 Rounds, 80881
Hornady Custom .300 AAC Blackout 135 grain Flex Tip eXpanding Brass Cased Centerfire Rifle Ammo, 20 Rounds, 80881
(3)
List: $49.53 (Save 32%)
$33.48
$1.67/Round
SinterFire Reduced Hazard .300 AAC Blackout 110 Grain Frangible Brass Cased Rifle Ammo, 50 Rounds, SF300BLK110RHA
SinterFire Reduced Hazard .300 AAC Blackout 110 Grain Frangible Brass Cased Rifle Ammo, 50 Rounds, SF300BLK110RHA
(3)
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$43.05
$0.86/Round
Wilson Combat Hornady V-MAX .300 AAC Blackout 110 Grain Brass Cased Pistol Ammo, 20 Round, A300BLK-110-VMAX-20RD
Wilson Combat Hornady V-MAX .300 AAC Blackout 110 Grain Brass Cased Pistol Ammo, 20 Round, A300BLK-110-VMAX-20RD
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$28.99
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Hornady Ammo Custom, .300 Blackout, 110 Grain, Centerfire Rifle Ammo, CX Polymer Tip, 20 Rounds, 808794
Hornady Ammo Custom, .300 Blackout, 110 Grain, Centerfire Rifle Ammo, CX Polymer Tip, 20 Rounds, 808794
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Nosler Match Grade .300 AAC Blackout 220 Grain Custom Competition Hollow Point Boat Tail Brass Cased Centerfire Rifle Ammo, 20 Rounds, 51275
Nosler Match Grade .300 AAC Blackout 220 Grain Custom Competition Hollow Point Boat Tail Brass Cased Centerfire Rifle Ammo, 20 Rounds, 51275
(3)
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$45.49
$2.27/Round
SinterFire GreenLine .300 AAC Blackout 110 Grain Frangible Brass Rifle Ammo, 50 Rounds, SF300BLK110GL-C
SinterFire GreenLine .300 AAC Blackout 110 Grain Frangible Brass Rifle Ammo, 50 Rounds, SF300BLK110GL-C
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Barnes Vor-TxRifle Cartridges, .300 AAC Blackout, TAC-TX Boat Tail , 120 Grain, 20 - Rounds, 30827
Barnes Vor-TxRifle Cartridges, .300 AAC Blackout, TAC-TX Boat Tail , 120 Grain, 20 - Rounds, 30827
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Barnes 300 AAC Blackout, 120 Grain, Jacketed Hollow Point/JHP, Brass Cased Centerfire Rifle Ammo, 20 Rounds, 32004
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Fort Scott Munitions 300AAC BLACKOUT 190 Grain Centerfire Rifle Ammo, 20 Rounds, 300-190-SCV1SS
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Underwood Ammo .300 AAC Blackout 125 Grain Polymer Tipped Spitzer Nickel Plated Brass Cased Rifle Ammo, 20 Rounds, 418
Underwood Ammo .300 AAC Blackout 125 Grain Polymer Tipped Spitzer Nickel Plated Brass Cased Rifle Ammo, 20 Rounds, 418
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Barnes Precision Match .300 AAC Blackout 220 Grain Jacketed Hollow Point Brass Rifle Ammo, 20 Rounds, BB300BLKM2
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(1)
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$2.15/Round
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Nosler .300 AAC Blackout, Ballistic Tip , 125 grain, Brass Cased, 20 Rounds, 61032
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$40.42
$2.02/Round
SIG SAUER .300 AAC Blackout 220 Grain Match Brass Cased Rifle Ammo, 20 Rounds, C300A2-20
SIG SAUER .300 AAC Blackout 220 Grain Match Brass Cased Rifle Ammo, 20 Rounds, C300A2-20
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Federal Premium Power-Shok .300 AAC Blackout 150 Grain Soft Point Rifle Ammo, 20 Rounds, 300BLKB
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$25.20
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G9 Defense 300 BLK 120 Grain Barrier Blind Hollow Point Brass Cased Rifle Ammo, 20 Rounds, B-300BLK-120
G9 Defense 300 BLK 120 Grain Barrier Blind Hollow Point Brass Cased Rifle Ammo, 20 Rounds, B-300BLK-120
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Wilson Combat Hornady ELD-M .300 AAC Blackout 208 Grain Brass Cased Pistol Ammo, 20 Round, A300BLK-208-ELDM-20RD
Wilson Combat Hornady ELD-M .300 AAC Blackout 208 Grain Brass Cased Pistol Ammo, 20 Round, A300BLK-208-ELDM-20RD
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$36.36
$1.82/Round
Wilson Combat Sierra .300 AAC Blackout 220 Grain Hollow Point Boat Tail Brass Cased Pistol Ammo, 20 Round, A300BLK-220-HPBT-20RD
Wilson Combat Sierra .300 AAC Blackout 220 Grain Hollow Point Boat Tail Brass Cased Pistol Ammo, 20 Round, A300BLK-220-HPBT-20RD
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$42.99
$2.15/Round
Remington Subsonic .300 AAC Blackout 220 Grain Open Tip Flat Base Rifle Ammo, 20 Rounds, 28430
Remington Subsonic .300 AAC Blackout 220 Grain Open Tip Flat Base Rifle Ammo, 20 Rounds, 28430
(2)
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$1.80/Round
HSM Ammunition Match .300 AAC Blackout 208 Grain Spitzer Boat Tail Brass Cased Rifle Ammo, 20 Rounds, 300BLK1N
HSM Ammunition Match .300 AAC Blackout 208 Grain Spitzer Boat Tail Brass Cased Rifle Ammo, 20 Rounds, 300BLK1N
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Remington Core-Lokt .300 AAC Blackout 120 grain Copper Hollow Point Brass Rifle Ammo, 20 Rounds, R27857
Remington Core-Lokt .300 AAC Blackout 120 grain Copper Hollow Point Brass Rifle Ammo, 20 Rounds, R27857
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$2.30/Round
Magtech 300 Blackout 123 Grain Full Metal Jacket Brass Cased Rifle Ammo, 50 Rounds, 300BLKB
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Freedom Munitions .300 Blackout 125 Grain Full Metal Jacket Brass Rifle Ammo, 50 Rounds, FM300F125N50
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$0.66/Round
Super Vel Ammunition 300 Blackout 200 grain Full Metal Jacket Brass Cased Rifle Ammunition
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7% Coupon
Super Vel Ammunition 300 Blackout 150 grain Full Metal Jacket Brass Cased Rifle Ammunition
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Veteran Ammo Defense .300 AAC Blackout 110 Grain Hollow Point Brass Cased Centerfire Pistol Ammo, 20 Rounds, HMBX-300-26
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$41.49
$2.07/Round
Veteran Ammo Defense .300 AAC Blackout 200 grain Hollow Point Brass Cased Centerfire Pistol Ammo, 20 Rounds, HMBX-300-27
Veteran Ammo Defense .300 AAC Blackout 200 grain Hollow Point Brass Cased Centerfire Pistol Ammo, 20 Rounds, HMBX-300-27
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$2.45/Round
Newly Added
Doubletap Ammunition Colt Defense .300 AAC Blackout, 125 grain, Solid Copper, 20 Rounds Rifle Ammo, 300BLK125CT
Doubletap Ammunition Colt Defense .300 AAC Blackout, 125 grain, Solid Copper, 20 Rounds Rifle Ammo, 300BLK125CT
List: $49.99 (Save 29%)
$35.49
$1.77/Round
Underwood Ammo .300 AAC Blackout 194 Grain Solid Monolithic Hollow Point Nickel Plated Brass Cased Rifle Ammo, 20 Rounds, 452
Underwood Ammo .300 AAC Blackout 194 Grain Solid Monolithic Hollow Point Nickel Plated Brass Cased Rifle Ammo, 20 Rounds, 452
(1)
List: $112.99 (Save 30%)
$79.49
$3.97/Round
Underwood Ammo .300 AAC Blackout 220 Grain Hollowpoint Boat Tail Match Nickel Plated Brass Cased Rifle Ammo, 20 Rounds, 419
Underwood Ammo .300 AAC Blackout 220 Grain Hollowpoint Boat Tail Match Nickel Plated Brass Cased Rifle Ammo, 20 Rounds, 419
(2)
List: $70.58 (Save 41%)
$41.49
$2.07/Round
Barnes .300 AAC Blackout 205 Grain Suppressor BTHP Brass Rifle Ammo, 20 Rounds, SUP300BLK1
Barnes .300 AAC Blackout 205 Grain Suppressor BTHP Brass Rifle Ammo, 20 Rounds, SUP300BLK1
List: $29.99
$29.49
$1.47/Round
Next

Gun Parts and Accessories

1–13 / 13
Previous
Heresy Design Steyr AUG 9mm 20.1in Nato Stock Conversion Kit w/ Faux Suppressor, Black, HBA16D-N10-FC-10RD
Heresy Design Steyr AUG 9mm 20.1in Nato Stock Conversion Kit w/ Faux Suppressor, Black, HBA16D-N10-FC-10RD
List: $799.95 (Save 13%)
$699.95
Steyr AUG Hand Bolt
Steyr AUG Hand Bolt
(1)
List: $330.00 (Save $31.00)
$299.00
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Free 2 Day Shipping
Steyr AUG Spare Parts Kit, Black, 1200000600
Steyr AUG Spare Parts Kit, Black, 1200000600
(2)
List: $249.00 (Save $10.00)
$239.00
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Elite Tactical Systems Universal Rifle Mag Loader, ETSCAM-RIFLE
Elite Tactical Systems Universal Rifle Mag Loader, ETSCAM-RIFLE
(25)
List: $44.95 (Save 17%)
$37.09
Manticore Arms AUG Enhanced Port Cover, Black, MA-38300
Manticore Arms AUG Enhanced Port Cover, Black, MA-38300
$69.99
Gear Head Works AUG Low Profile Charging Handle, Black, GHW-01
Gear Head Works AUG Low Profile Charging Handle, Black, GHW-01
(3)
List: $51.99 (Save $4.00)
$47.99
Heresy Design Steyr AUG Safety Selector, Black, HD-SS
Heresy Design Steyr AUG Safety Selector, Black, HD-SS
List: $59.95 (Save 50%)
$29.95
Free 2 Day Shipping
Heresy Design 16.3in 5.56 AUG Conversion Kit, Black, HB16A
Heresy Design 16.3in 5.56 AUG Conversion Kit, Black, HB16A
(1)
List: $499.95 (Save 20%)
$399.95
Heresy Design 16.3in 9mm AUG Conversion Kit For NATO Stock, Black, HBA16D-N
Heresy Design 16.3in 9mm AUG Conversion Kit For NATO Stock, Black, HBA16D-N
(3)
List: $699.95 (Save 14%)
$599.95
Maglula LU54B Loader StripLULA Steyr AUG 10-round 223 Remington/5.56 NATO Polyme
Maglula LU54B Loader StripLULA Steyr AUG 10-round 223 Remington/5.56 NATO Polyme
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List: $29.95 (Save 13%)
$25.95
Heresy Design 16.3in 9mm AUG Conversion Kit For Standard Stock, Black, HBA16D-A
Heresy Design 16.3in 9mm AUG Conversion Kit For Standard Stock, Black, HBA16D-A
(2)
List: $699.95 (Save 14%)
$599.95
Manticore Arms Brass Buster Brass Deflector for Steyr AUG, Black, MA-200
Manticore Arms Brass Buster Brass Deflector for Steyr AUG, Black, MA-200
List: $38.09 (Save 35%)
$24.59
PODAVACH Steyr AUG Magazine Speed Loader, .223 Remington/5.56x45mm NATO, Black, LAUGBL
PODAVACH Steyr AUG Magazine Speed Loader, .223 Remington/5.56x45mm NATO, Black, LAUGBL
(2)
List: $109.00 (Save $10.00)
$99.00
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Heresy Design 16.3in .300BLK AUG Conversion Kit Accessories

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Heresy Design Steyr AUG M2 Rail, Black, HD-AM2R
Heresy Design Steyr AUG M2 Rail, Black, HD-AM2R
List: $149.95 (Save 17%)
$124.95
MTM J-20-MLD Slip-Top Ammo Box
MTM J-20-MLD Slip-Top Ammo Box
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Steyr AUG Short Rail, 5.56x45mm NATO/223 Remington, Black, 1252020042
Steyr AUG Short Rail, 5.56x45mm NATO/223 Remington, Black, 1252020042
List: $125.00 (Save $5.01)
$119.99
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Magazine and Accessories

1–5 / 5
Previous
Heresy Design Extended Magazine Release For Steyr AUG - Standard, Black, HD-MR
Heresy Design Extended Magazine Release For Steyr AUG - Standard, Black, HD-MR
(1)
List: $115.95 (Save 48%)
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Steyr AUG/USR Magazine, 223 Remington, 10 Round, Black, 1245050501-10RD
Steyr AUG/USR Magazine, 223 Remington, 10 Round, Black, 1245050501-10RD
List: $49.00 (Save 12%)
$43.00
Magpul Industries PMAG 30 AUS Gen M3 Window Steyr AUG Rifle Magazine, 5.56x45mm, 30 Round, Black, 1 Pack, Polymer, MAG575-BLK-30RD
Magpul Industries PMAG 30 AUS Gen M3 Window Steyr AUG Rifle Magazine, 5.56x45mm, 30 Round, Black, 1 Pack, Polymer, MAG575-BLK-30RD
List: $29.95 (Save $2.00)
$27.95
Heresy Design AUG Standard A3 M1 9mm 30 Rounds Polymer Rifle Magazine, Black, HD-DMA
Heresy Design AUG Standard A3 M1 9mm 30 Rounds Polymer Rifle Magazine, Black, HD-DMA
(1)
List: $89.95 (Save 22%)
$69.95
Heresy Design AUG A3 M1 NATO 9mm 30 Rounds Polymer Rifle Magazine, Black, HD-DMN
Heresy Design AUG A3 M1 NATO 9mm 30 Rounds Polymer Rifle Magazine, Black, HD-DMN
List: $89.95 (Save 22%)
$69.95
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Training Gear

1–5 / 5
Previous
Blueguns Training Long Gun - Steyr Aug Long Gun
Blueguns Training Long Gun - Steyr Aug Long Gun
As Low As (Save Up to 12%)
$239.99
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Blueguns Training Magazine Steyr Aug Mag. Black - FSAUGMB
Blueguns Training Magazine Steyr Aug Mag. Black - FSAUGMB
List: $64.74 (Save 26%)
$47.89
Blueguns Steyr AUG Training Guns, Not Weighted, No Light/Laser Attachment, Rifle, Black, Flat Top Open Stock, Fwd Rail, ACOG Sight, FSM4CFTRACOGB
Blueguns Steyr AUG Training Guns, Not Weighted, No Light/Laser Attachment, Rifle, Black, Flat Top Open Stock, Fwd Rail, ACOG Sight, FSM4CFTRACOGB
List: $266.51 (Save 10%)
$239.99
Blueguns Training Magazine, Steyr Aug Mag., Blue, FSAUGM
Blueguns Training Magazine, Steyr Aug Mag., Blue, FSAUGM
List: $73.76 (Save 11%)
$65.99
ASP - Red Gun Training Series - Steyr AUG 07759
ASP - Red Gun Training Series - Steyr AUG 07759
$249.99
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Heresy Design 16.3in .300BLK AUG Conversion Kit Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Heresy Design 16.3in .300BLK AUG Conversion Kit, Black, HB16B , MPN: HB16B-EDEMO , Code: 6KH-CNC-EEF-HB16B-0RD-EDEMO-OB-B
  • Heresy Design 16.3in .300BLK AUG Conversion Kit, Black, HB16B , MPN: HB16B , UPC: 850055721043 , Code: 6KH-CNC-EEF-HB16B-0RD
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Last updated 2026-10-28 UTC.