FN M249S 16.1" 5.56x45 NATO New In Box Shipping rate is price charged by carrier. Ships to FFL/SOT only. contiguous 48 only. Please ensure that this purchase is legal in your state. All NFA rules apply. The FN M249S®, a semi-automatic version of the M249 SAW light machine gun, was originally developed by FN Herstal and adopted by the U.S. military in 1988. The rifle features the signature 16.1-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. Receiver: Formed steel frame with claw extractor design Fixed, pivoting ejector, plus side ejection of cases Top cover integrated 1913 mounting rail for sighting systems Folding steel bipod Folding carry handle Flip-up feed tray cover and feed mechanism Barrel: Quick-change barrel capability cold hammer-forged steel Hard chrome-plated bore and chamber Removable heat shield Operating Controls: Crossbolt safety Curved trigger for improved finger position and control Redesigned trigger mechanism for semi-auto fire Non-reciprocating charging handle FEED SYSTEM Standard disintegrating link belt-fed. Under-mounted polymer ammunition container helps keep ammunition cleaner for reduced wear and added reliability.