The FN M249SA(R), a semi-automatic version of the M249 SAW light machine gun, was originally developed by FN Herstal as the FN MINIMIA(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. PRIMARY FEATURES Semi-auto replica of the government-issue FN M249 SAW Robust gas system RECEIVER Formed steel frame with claw extractor design Fixed, pivoting ejector, plus side ejection of cases Top cover integrated MIL-STD-1913 mounting rail for Mfg: Fn America