FN M249S Rifle | 5.56x45mm | 18.5in | 46100169

The FN M249S is the semi-automatic civilian iteration of FN Herstal’s M249 light machine gun platform, built for users who want the same operating concept in a closed-bolt, semi-auto configuration. Chambered in 5.56x45mm NATO, it features an 18.5-inch cold hammer-forged, chrome-lined barrel and accepts both magazines and linked belt ammunition. The rifle ships with a folding bipod, carry handle and an optics-ready top cover. A practical optic pairing under $1000 is the Vortex Viper PST Gen II 1-6×24, which offers durable construction, low-magnification field of view and glass quality suitable for this platform.

Common applications include structured range training and marksmanship work, and competition or demonstration events where sustained semi-automatic fire and ammunition versatility are required.

Product Specifications

• The rifle is chambered in 5.56x45mm NATO.
• The action is Semi-Auto operating from a closed-bolt position.
• The barrel measures 18.5 inches and is cold hammer-forged with a chrome-lined bore.
• The overall length is 40.7 inches for the configuration listed.
• The unloaded weight is approximately 17.2 lbs.
• The system accepts both a 30-round magazine and a 200-round disintegrating link belt.
• The rifle includes a folding bipod and carry handle as standard items.
• The feed system is standard disintegrating link belt-fed with magazine compatibility.
• The barrel is described as chrome-lined with a removable heat shield.
• The rifling twist rate is 1:7 RH.
• The stock is a polymer fixed stock with a hydraulic buffer system and a non-slip buttplate.
• The finish on metal components is matte black.
• Sighting options include adjustable flip-up sights and a MIL-STD-1913 top rail for optics.
• The package includes one 30rd GI magazine and 200 links.
• The UPC for this item is 845737015077.

This M249S delivers a platform-oriented experience for shooters who need a high-capacity, robust semi-automatic rifle with both magazine and belt-feed capability. Its construction and features make it well suited to high-volume range work and practical training scenarios where reliability and endurance are required.