Bear Creek Arsenal 5.56 NATO AR-15 Barrel - 10.5" - 1:8 - Carbine

FN America AR-15 16" Barrel 556NATO 1:7 Twist Button Broached, Black - 20100039

Faxon Firearms Mid-Length Button Rifled Gunner Barrel 5.56x45mm 16", Black

Ballistic Advantage Performance Barrel 5.56x45mm 13.70", Black - Compact and Efficient Barrel - BABL556036F

Timber Creek Rifle-Length SOCOM Barrel 6.5 Grendel 18", Black

Faxon Firearms Mid-Length Button Rifled Pencil Barrel 5.56x45mm 16", Black

TacFire AR-15 Blow Back 9mm 1:10 4150 Chrome Moly Vanadium Barrel - 1/2x36 - 7.5"

TacFire AR-15 Blow Back 9mm 1:10 4150 Chrome Moly Vanadium Barrel - 1/2x36 - 4.5"