Barrel: 4150 CrMv Chrome Molly Steel, 16" M203 barrel length Chambered in 5.56/.223 Nato , with a 1:7 twist, M4 barrel extension, and a mid-length gas system. The A2-style profile barrel is gas nitride treated durability. Barrel is finished off with an .750" diameter F-marked front sight base with sling swivel, classic black handguards and an A2 flash hider.
Upper: AO Precesion Forged 7075-T6 A4 AR upper is hard coat anodized black for durability. Featuring M4 feedramp cuts, T-marks, these upper upper receivers are made for us right here in the USA.
Bolt Carrier Group: For AR-15 and M16 rifles and carbines. Bolt is made of shot-peened, Mil-spec Carpenter 158® steel. Gas key is secured with grade 8 fasteners and staked. Bolt carrier is parkerized outside and chrome lined inside. Includes Charging Handle.
Lower Build Kit: Includes the GM-15 Resistance Lower Build Kit. Everything you need to complete your lower receiver.
Our products carry a lifetime, no questions asked, warranty. Simply put... Should any of our products fail, return it to us for a brand new replacement.