FN M249S



  • CALIBER: 5.56x45mm
  • OPERATION: Closed-bolt
  • MAG CAPACITY: 200 Rd. belt or 30 Rd. mag
  • WEIGHT: 17.2 lb.
  • BARREL LENGTH: 18.5″
  • OVERALL LENGTH: 40.75″
  • TRIGGER PULL: 8 – 15.5 lb.
  • TWIST RATE: 1:7 RH


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The FN M249S, a semi-automatic variant of the legendary M249 Squad Automatic Weapon (SAW), is the epitome of reliability and firepower in modern firearms. Crafted by FN Herstal, this robust rifle embodies a legacy of military excellence. It was originally designed to provide sustained suppressive fire for infantry units. With a design deeply rooted in battlefield experience, the FN M249S boasts a rugged construction tailored for durability under the harshest conditions. Its iconic m249 saw for civilian appearance, FN 510™ MRD characterized by a distinctive boxy receiver and a long, slender barrel, exudes an aura of power and precision. The rifle’s matte black finish adds tom249 saw  tactical allure, blending seamlessly into any operational Glock 22 Gen5 MOS environment.

At its core lies a gas-operated action system optimized for flawless cycling and consistent performance. This system enables the M249S to unleash a torrent of 5.56mm NATO rounds with remarkable accuracy, making semi auto m249  a formidable force on the range or in combat scenarios. Its adjustable gas regulator further enhances versatility, allowing shooters to fine-tune the rifle’s behavior to suit their preferences or accommodate various ammunition types. Ergonomically designed controls ensure intuitive handling, facilitating swift magazine changes and effortless manipulation in high-pressure fn m249 saw 700 x powder situations. 

Key Features:

  1. Reliability: Known for its ruggedness and dependability, the FN M249S operates reliably even in adverse conditions.
  2. Versatility: Designed to adapt to various combat situations, it supports both automatic and semi-automatic firing modes.
  3. High Capacity: The M249S typically utilizes high-capacity box magazines, allowing for sustained fire without frequent reloading.
  4. Long-Range Accuracy: Equipped with a long barrel and precision sights, it offers accurate shooting at extended distances.
  5. Lightweight Design: Despite its firepower, the M249S features a relatively lightweight construction, facilitating maneuverability on the battlefield.
  6. Adjustable Stock: The adjustable stock enhances comfort and stability, catering to the preferences and physique of different users.
  7. Quick Barrel Change: Designed for rapid barrel changes to prevent overheating during prolonged firing sessions, ensuring sustained performance.
  8. Accessory Compatibility: It is compatible with a wide range of accessories, including optics, grips, and muzzle devices, allowing customization to meet specific operational requirements.



The FN M249S is a semi-automatic version of the renowned FN M249 Squad Automatic Weapon (SAW), designed and manufactured by FN America. This firearm is built to provide reliable performance, durability, and versatility in various tactical applications, including military, law enforcement, and civilian m249 civilian costuse.

  • Chambered in 5.56x45mm NATO, the FN M249S offers compatibility with standard NATO ammunition, ensuring widespread availability and interoperability.
Operating System:
  • The FN M249S operates on a closed-bolt, gas-operated system, providing consistent cycling and reliable performance under various conditions.
  • The firearm features a cold hammer-forged, chrome-lined barrel for enhanced durability, heat resistance, and extended service life.
  • Barrel length: 18.5 inches.
  • The muzzle is equipped with a flash suppressor to reduce muzzle flash and control muzzle rise during firing.


  • Constructed from high-strength steel, the receiver of the FN M249S ensures ruggedness and longevity.
  • The top cover is designed for quick access to the chamber and facilitates easy maintenance and inspection.
Operating Controls:
  • The FN M249S features ambidextrous operating controls, including a crossbolt safety selector and a non-reciprocating charging handle, enhancing accessibility and usability for both left-handed and right-handed shooters.
Feed System:
  • Utilizes standard M27-linked ammunition belts, providing seamless compatibility with existing military and civilian supply chains.
  • The feeding mechanism incorporates a disintegrating link system for reliable ammunition feeding and ejection.


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