FN M249S Semi-Auto Rifle 5.56 NATO 18.5in

About this product

The FN M249S is a semi-automatic adaptation of FN Herstal’s MINIMI design, offered in a configuration suited for range use and other lawful applications. Chambered for 5.56x45mm NATO (also listed as .223 Rem), it accepts standard detachable magazines or a linked disintegrating belt. The rifle is fitted with an 18.5-inch cold hammer-forged, chrome-lined barrel and includes a folding carry handle and integral bipod for transport and support. Designed with a top rail for optics and adjustable sights, the M249S provides a platform familiar to users who value durability and robustness.

Key Specifications

• The chambering is 5.56x45mm NATO / .223 Rem.
• The barrel measures 18.5 inches and is cold hammer-forged with a chrome-lined bore.
• The action is semi-automatic.
• The rifle accepts both 30-round detachable magazines and a 200-round disintegrating link belt.
• The magazine capacity is listed as 30 rounds for the included magazine.
• The operation is specified as closed-bolt.
• Included items are a folding bipod and a folding carry handle.
• The barrel finish is listed as chrome-lined with a matte exterior finish.
• Sighting equipment includes a flip-up rear sight and a dot front sight.

The FN M249S brings the key features of the MINIMI family to a semi-automatic platform, making it a choice for shooters who want a robust, belt- or magazine-fed rifle with proven barrel technology and practical field features. Its combination of a cold hammer-forged chrome-lined bore, feeding flexibility, and integrated support hardware makes it suitable for sustained-range use and users who prioritize dependable construction and accessory readiness.