The FN 15 Military Collector Series M4 brings to market a military replica rifle made to FN’s exacting specifications. The semi-automatic rifle is chambered in 5.56x45mm NATO and feature an M4-profile 16-inch, 1:7” twist, button-broached and chrome-lined barrel. Each UID-labeled lower receiver is equipped with an ambidextrous selector switch, just like its select-fire big brother. The M4 stock is collapsible with six positions of adjustment and a sling attachment for comfort and precision. The handguard features a Knights Armament M4RAS adapter with rail covers that provide a classic military look when the adapters are not in use. The flat-top receiver comes topped with a M-1913 Mil-Std rail at the 12 o'clock position and an adjustable rear sight. Ambidextrous safety lever and ergonomic magazine release. Permanent A2-style compensator. Forward assist feature. 30-round low-friction follower aluminum magazine. Vertical foregrip included.