Upper Parts

Gas Tube Roll Pin

+ 2 reviews

New Frontier Armory

AR-40/10 Standard .40 S&W / 10mm BCG (Glock Style Magazine AR Compatible)

+ 4 reviews

New Frontier Armory

0.625" (5/8") Crush Washer -- .30, .40, .45, 7.62x51 BBLs

+ 1 reviews

New Frontier Armory

0.578" Crush Washer -- ONLY fits .578" threads

+ 3 reviews

New Frontier Armory

AR-45 Standard 45 ACP BCG (Glock & Colt Style Magazine AR Compatible)

+ 1 reviews

New Frontier Armory

AR-15 Firing Pin Retaining Pin

LRBHO Hardware Kit

+ 2 reviews

New Frontier Armory

Spare Firing Pin Spring - Pistol Caliber

New Frontier Armory

Flash Hider 7.62/.30 5/8x24

New Frontier Armory

AR-15 Charging Handle

+ 1 reviews

5.56mm Bolt

New Frontier Armory

AR-10 Charging Handle