Bushmaster ACR SS Complete Specs and Full Gun Specifications

Bushmaster ACR has ability to change calibers, barrel lengths and stock configurations in minutes – without the use of tools. 16 1" cold hammer-forged barrel with melonite coating for extreme long life. 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" and 16.5" and in multiple calibers. Multi-caliber bolt carrier assembly quickly and easily changes from 6.8mm Rem SPC (spec II chamber) to 223/5.56mm NATO. Free-floating MIL-STD 1913 monolithic top rail for optic mounting. 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. Fixed high-impact composite A-frame stock with rubber butt pad and sling mounts. Ships in oversized hard case for accessory storage, includes 30-round PMAG.