Rosco Manufacturing Bloodline 5.56 NATO Barrel M4 12.5in Carbine 1-7 Twist 1/2x28 Thread Nitride Black BL-125-M4-556-7-C. 56 (NATO) barrels are designed to meet the modern day carbine shooters requirements. We are a long way from our daddy's...
Rosco Manufacturing Bloodline 5.56 NATO Barrel M4 12.5in Carbine 1-7 Twist 1/2x28 Thread Nitride Black BL-125-M4-556-7-C. 56 (NATO) barrels are designed to meet the modern day carbine shooters requirements. We are a long way from our daddy's...