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.300 Blackout AR-15 Build Kits and Assemblies

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RECOMMENDED

AT3 Tactical AT-15 M-LOK Builder Set - Lower, Upper, and SPEAR M-LOK Handguard

(9)

AT3™ AT-15 M-LOK Builder Set – Anodized and Cerakote

RECOMMENDED

AT3 Tactical AT-15 Quad Rail Builder Set - Lower, Upper, and Pro Quad Rail Handguard

(6)

AT3™ AT-15 Quad Rail Builder Set – Anodized and Cerakote

NEW

AT3 Barrel Builder Kit – 7.5″ .300 Blackout Medium Profile Pistol Length Barrel, Gas Block & Gas Tube

NEW

AT3 Barrel Builder Kit – 7.5″ .300 Blackout Medium Profile Pistol Length Barrel, Gas Block, Gas Tube & BCG

AT3 Tactical 10.5 Inch 300 BLK Complete AR-15 Upper Assembly - No BCG or Charging Handle

(13)

AT3™ 10.5 Inch .300 Blackout Assembled Pistol Upper for AR-15 – No BCG/CH

AT3™ FF-ML 16 Inch .300 BLK Complete Upper - .300 AAC Blackout 16 Inch Ballistic Advantage Barrel - 15" M-LOK Free Float Handguard

(7)

AT3™ 16 Inch .300 BLK Assembled AR-15 Upper – 16 Inch Ballistic Advantage Barrel – No BCG/CH

AT3™ .300BLK 16″ Assembled Forged Upper – 2A Basics ASAL 15" Handguard – No BCG/Charging Handle

AT3™ .300BLK 16″ Assembled Forged Upper – 2A Basics ASAL 15″ Handguard – No BCG/Charging Handle

NEW

AT3 10.5" .300 Blackout AR-15 JNL Ready Build Kit

AT3 10.5″ .300 Blackout AR-15 JNL Ready Build Kit

NEW

AT3 Barrel Builder Kit – 10.5″ .300 Blackout Medium Profile Pistol Length Barrel, Gas Block & Gas Tube

Radical Firearms 16" .300 Blackout Complete Upper Receiver with M-LOK Handguard - AT3 Tactical

Radical Firearms 16″ .300 Blackout Complete Assembled AR-15 Upper Receiver with M-LOK Handguard

AT3™ 6.5 Grendel 20″ Assembled Forged Upper – 2A Basics ASAL 15" Handguard – No BCG/Charging Handle - Faxon Barrel

AT3™ 6.5 Grendel 20″ Assembled Forged Upper – 2A Basics ASAL 15″ Handguard – No BCG/Charging Handle – Faxon Barrel

Sale!

STNGR 10.5 Inch 300BLK Complete Upper w/ 13.5 Inch HWKXL® Handguard, BCG & CH

STNGR 10.5 Inch 300BLK Complete Upper w/ 13.5 Inch HWKXL® Handguard, BCG & CH

Sale!

AT3™ Assembled Pistol Upper for AR-15 - .300BLK - 8.5" Barrel - 7" Free Float Quadrail - No BCG/CH - 3 Colors

AT3™ Assembled Pistol Upper for AR-15 – .300BLK – 8.5″ Barrel – 7″ Free Float Quadrail – No BCG/CH – 3 Colors

Sale!

STNGR 8.5 Inch 300BLK Complete Upper w/ 7 Inch VYPR® Handguard, BCG & CH - 3 Colors

STNGR 8.5 Inch 300BLK Complete Upper w/ 7 Inch VYPR® Handguard, BCG & CH – 3 Colors

Sale!

AT3™ Assembled Forged Pistol Upper for AR-15 - .300BLK - 8.5" Barrel - 7" Free Float Quadrail - No BCG/CH - 3 Colors

AT3™ Assembled Forged Pistol Upper for AR-15 – .300BLK – 8.5″ Barrel – 7″ Free Float Quadrail – No BCG/CH – 3 Colors