ROSCO BL BBL 11.5" 5.56 1/7
Rosco Manufacturing, Bloodline Barrel, 556NATO, 11.5", Black Nitride Finish, 1:7 Twist, 1/2x28, 4150 CMV (Part # ROSBL-115-M4-556-7-C)
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So far the performance out of this barrel has been great. It delivers about 2moa accuracy with standard ball ammo and about 1-1.5 with 77gr match ammo. Not bad for what is basically a mil spec combat grade barrel.