The FN M249S(R), a semi-automatic version of the M249 SAW light machine gun, was originally developed by FN Herstal as the FN MINIMI(R) 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