Ballistic Advantage's 5.56 chambered M4 Carbine Length and HBAR Mid-Length Classic Series Barrel is machined from CrMoV steel with a chrome lined bore and chamber with a manganese phosphate finish and phosphate coated M4 feed ramp extension....
Ballistic Advantage's 5.56 chambered M4 Carbine Length and HBAR Mid-Length Classic Series Barrel is machined from CrMoV steel with a chrome lined bore and chamber with a manganese phosphate finish and phosphate coated M4 feed ramp extension....