Bushmaster ACR Enhanced

16 1" cold hammer-forged barrel with an innovative protective coating which uses a nitriting process that dramatically reduces wear for the ultimate in longevity and dependability. A2 birdcage-type hider to control muzzle flash. Adjustable, two-position, gas piston-driven system for firing suppressed or unsuppressed, supported by hardened internal bearing rails. Tool-less, quick-change barrel system available in 10.5", 14.5", 16.5" and 18.5" and in multiple calibers. Multi-caliber bolt carrier assembly quickly and easily changes from 5.56 NATO/223 Rem to 6.8mm Rem SPC. Free-floating MIL-STD 1913 monolithic top rail for optic mounting. Magpul MBUS front/rear flip sights. Fully ambidextrous controls including magazine release, bolt catch and release, fire selector and non-reciprocating charging handle. High-impact composite hand guard with heat shield – accepts rail inserts. High-impact composite lower receiver with textured magazine well and modular grip storage. Folding and six-position telescoping high-impact polymer stock with rubber butt pad and sling mount (basic folder only). Ships in hard case and includes 30-round PMAG