Quick view Ballistic Advantage Ballistic Advantage Ar Barrels, Ba Babl556005m 5.56 Brl Cmv 10.5 Car Gov $133.00 The ballistics advantage 5.56 govenment chambered 10.5" modern series barrel is machined from 4150 chrome moly vanadium steel with a qpq corrosion resistant finish and qpq coated m4 feed ramp extension.*all nfa/atf rules apply.You may use this barrel... Compare Add to Cart