NIB Bushmaster ACR Standard Model in Dark Earth. * 16 ½" cold hammer-forged barrel with innovative coating for extreme long life (1x7" and 1x9" twist available) * A2 "birdcage-type" hider to control muzzle flash * Adjustable, two-position gas-piston-driven system, for firing suppressed or unsuppressed * Tool-less quick-change barrel system available in 10.5", 14.5", 16.5" and 18" and in multiple calibers * Multi-caliber bolt carrier assembly quickly and easily changes from 223/5.56mm NATO to 6.8mm Rem SPC * Free-floating MIL-STD 1913 monolithic top rail for optic mounting * Fully ambidextrous controls include 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 * Fixed high-impact composite A-frame stock with rubber butt pad and sling mounts * Magpul MBUS front/rear flip sights * Ships in over sized hard case for accessory storage, includes 30-round PMAG Make sure this rifle is legal in your state before purchasing.