The FN FN15 Military Collector M4 Stripped Lower Receiver is a multi-caliber AR-15 lower finished in black, built as part of FN’s Military Collector series that replicates FN’s U.S. military-contract carbine production (FN America part no. 20100821). FN America manufactures rifles for the U.S. military, and this Military Collector lower gives builders an authentic-style foundation for an M4-pattern AR-15 build. It’s sold stripped, letting builders choose their own trigger group, furniture, and internals to finish out a personalized rifle or pistol build on a proven receiver platform.
Key Specifications
- The lower accepts Multi-caliber AR upper receivers for chambering flexibility.
- The receiver’s colored metal finish is built for long-term durability.
- It’s part of FN’s Stripped Lower Receiver Military Collector series.
- A Semi-Auto fire control design keeps the build standard and reliable.
- The receiver carries the M4 roll mark, matching FN’s official U.S. military production markings.
- It’s manufactured to the same MIL-SPEC standards FN uses on its U.S. military M4 contracts.
- It’s built for M4 and M16-pattern builds in 5.56 NATO/.223 Remington.
- The receiver carries a hard anodized black finish for corrosion resistance.
- It’s forged from 7075-T6 aluminum and broached to precise tolerances.
Frequently Asked Questions
Does this lower include internals? No, it’s sold stripped so builders can choose their own trigger, furniture, and internals.
Will it work with multiple AR calibers? Yes, it’s built to accept multi-caliber AR upper receivers.
Buy the FN FN15 Military Collector M4 Stripped Lower Receiver
Build on an authentic FN America / FN Herstal military-contract-style foundation. Shop more AR15 lowers and order this FN15 lower from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.
