Own a piece of firearm history from the makers of the world's most battle-proven firearms. The FN 15 Military Collector series M4 brings to market a military replica rifle made to FN's, and the U.S. military's exacting specifications. The semi-automatic rifle is chambered in 5.56x45mm NATO and features a 16-inch, 1:7 RH, button-broached, and chrome-lined barrel. The UID-labeled lower receiver is equipped with an ambidextrous selector switch, just like its select-fire big brother, the M4A1. Features: Knights Armament M4RAS Adapter rail with rail adapter covers Ambidextrous safety lever Receiver - hard anodized aluminum Flat-top receiver, M-1913 MIL-STD rail at the 12 o'clock position A2-style front sight, adjustable rear sight UID label Barrel - 16 inches button-broached, chrome-lined A2-style compensator (permanently attached) Stock - collapsible, 6-position with sling mount M4 with pistol grip Operating controls - ambidextrous safety lever Ergonomic magazine release Forward assist Magazine - aluminum body, Low friction follower, AR-style 30 round capacity