.300 BLK Barrels

KAK, SPL- 4.75" Micro Gas, 1:5, .300 BLK

KAK Industry

KAK, SPL- 8" Pistol Length, 1:5, .300 BLK

KAK Industry

Centurion Arms, 8.5" Cold Hammer Forged Chrome Lined, Midweight, 1:5, .300 BLK

Centurion Arms

SLR 5", Micro AR Barrel Assembly, 1:5, 300 BLK

SLR Rifleworks