Forged from 7075 T6 aluminum, Precisely machined to M16/M4 specs, M4 feed ramps, Hard-coat anodized mil 8625 type 3 class 2 finish, .250 take down pins, MI M16 bolt carrier group, MI-CRM15″ Combat series handguard, M-LOK(TM) compatible, Laser engraved T-marks, Lightweight Melonite barrel, 16 inch, 1/8 twist, .223 Wylde chamber, Mid-Length gas system, .625 diameter barrel, A2 flash hider, Works with standard AR15 components and magazines, Receiver rear takedown pin detent hole threaded for a 4-40 set screw, Mil Spec diameter buffer tube, Magpul(R) CTR(R) buttstock, Magpul(R) MOE(R) grip, Heavy Duty Quick Detach End Plate MI-HDEP