The FN M249S®, a semi-automatic version of the M249 SAW light machine gun, was originally developed by FN Herstal as the FN MINIMI® and adopted by the U.S. military in 1988. The rifle features the signature 18.5-inch FN cold hammer-forged, chrome-lined barrel and operates from a closed-bolt position. Chambered in 5.56x45mm NATO, the rifle will accept both magazine and linked ammunition belt. Under-mounted polymer ammunition container helps keep ammunition cleaner for reduced wear and added reliability. Features: Folding steel bipod and carry handle, Non-reciprocating charging handle, Crossbolt safety, Removable heatshield - CALIBER .223 REM/5.56MM NATO - MAGAZINE (1) 30rd capacity - BARREL 18.5" w/ Quick-change barrel capability and Flash Hider - RECEIVER Formed steel frame w/ claw extractor design - SIGHTS Adjustable Open Rifle Iron - TRIGGER Redesigned trigger mechanism for semi-auto fire - STOCK Highly ergonomic polymer buttstock assembly - STOCK Hydraulic recoil buffer system and non-slip buttplate"/\