The FN M249 Trigger Mechanism is a factory-original FN OEM trigger group for the 5.56x45mm M249 family. As a complete replacement assembly, the FN M249 Trigger Mechanism includes the trigger frame, trigger, trigger guard, sear, safety, and pistol grip, built to the same standards as the parts already in your FN firearm.
This is a restricted item that can only be sold to SOT licensees or law enforcement agencies. To order, call our customer service department Monday through Friday, 8:00 to 4:00 CST. Proper documentation, paperwork, and the serial number of the firearm this part is intended for are required to complete each purchase.
Always follow all federal, state, and local laws governing this part.
Specifications and fitment
| Spec | Detail |
|---|---|
| Part type | OEM trigger mechanism / trigger group |
| Caliber | .223 Rem / 5.56x45mm |
| Fits | M249 SAW, M249S, M249 PARA, MINIMI |
| Finish | Black |
| Material | Polymer, aluminum, steel |
| Manufacturer | FN America |
Included components
This trigger mechanism ships as a complete assembly with the following components:
- Safety
- Sear and sear pin
- Trigger mechanism retaining spring
- Pistol grip
- Trigger guard and front trigger guard pin
- Trigger assembly, trigger pin, and trigger spring
- Trigger module pin
Factory OEM replacement part
This is a factory original FN part, made with the same materials and workmanship as the components already in your FN firearm, whether manufactured by FNH, FN Herstal, FNH USA, or FN America. It serves as a direct replacement for the M249-family trigger group, and you can find it among the other FN trigger groups we carry. It is recommended that all M249 parts be installed by a qualified gunsmith.
As a specialist supplier, we keep a focused selection of FN replacement parts for serious builders and agencies.
Frequently asked questions
Who can purchase this part? This is a restricted item available only to SOT licensees or law enforcement agencies. Call customer service Monday through Friday, 8:00 to 4:00 CST, with the required documentation, paperwork, and firearm serial number to order.
Which firearms does this fit? It fits the 5.56x45mm M249 SAW, M249S, M249 PARA, and MINIMI.
Should a gunsmith install it? Yes. It is recommended that all M249 parts be installed by a qualified gunsmith.
To place an order, view the FN M249 Trigger Mechanism and contact customer service with your documentation.






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