Proof Research PR15 6mm ARC AR-15 Barrel - Rifle Length - 22" - Carbon Fiber

Alex Pro Firearms Varmint 2.0 6mm ARC 22in Barrel 24 Round Cerakote Finish

BALLISTIC ADVANTAGE Premium Series 6MM ARC 16", 5/8x24, 1:7 Mid Length Gas Barrel for AR10

Ballistic Advantage Premium Black Series, Barrel, 22 ARC, 16 in, 1:7 Twist, Mid Length Gas System, QPQ Corrosion Resistant Finish, Black BABL22ARC01PQ

GEISSELE Freedom 6mm ARC 16" 8rd - Black

TacFire AR-15 Blow Back 9mm 1:10 4150 Chrome Moly Vanadium Barrel - 1/2x36 - 16"

GEISSELE Freedom Rifle (GFR) Maritime Rec 6mm ARC 16" Black

DIAMONDBACK FIREARMS Barrel 6.5 Creedmoor 24" Rifle Length Black