The GM-M52 18-inch-long fluted AR-15 barrel from Green Mountain, chambered in .223 Wylde, is made from 416 stainless steel with a bead-blast matte finish that has been black passivated. It features a 1:8 twist, 1/2x28 muzzle threads and is compatible with a .750-inch gas block and rifle-length gas tube. The barrel is button-rifled, air-gauged and stress-relieved with an M4 nickel boron coated extension. Green Mountain Rifle Barrel Company has been providing hunters and competition shooters with high-quality barrels since 1976, made with pride and attention to detail.
RETAIL: $198.95.
