Rosco Bloodline M4 5.56 NATO Barrel

The Rosco Bloodline M4 5.56 NATO Barrel was designed  in several different lengths 10.5″, 11.5″, 12.5″, 14.5″ and 16″. The barrels feature a 1/7 twist and 1/2×28 thread and a Carbine gas system length. It meets the modern day carbine shooters requirements, and has come a long way from our daddy’s “Sporter” AR. From properly managed dwell times for SBR’s, to running suppressed, or setting up a balanced patrol carbine Rosco has incorporated your needs into their engineering. Rosco has successfully accomplished this by picking the right twist rate, gas port diameters, and barrel materials according to the barrel being made. They have also balanced input from their consumers and military end users in order to bring you the product you need, not just the one Rosco wants to sell you.