Fn Fn15 Military Collector M16 Lower 5.56x45mm NATO Anodized

The FN 20100822 FN15 Military Collector M16 lower is built to mirror FN's U.S. Military production carbines and serves as the heart of an authentic M4 or M16 build for collectors, armorers, and serious shooters, forged from 7075-T6 aluminum, machined and broached to MIL?SPEC tolerances, and finished with hard anodizing to match service rifle aesthetics and durability. The receiver carries FN's original DoD contract markings while the fire control housing is modified to block select?fire, giving you a semi?auto receiver that closely reproduces the legacy M16/M4 lower for historical recreation, range use, or custom rifle projects chambered in 5.56x45mm NATO. Whether you're restoring a period-accurate rifle, assembling a high-fidelity display build, or constructing a reliable duty-style rifle for the range, the MIL?SPEC geometry ensures compatibility with standard triggers, stocks, and parts kits and maintains headspacing and fit for consistent function. This is a regulated firearm component requiring an FFL transfer; it is not an NFA item and ships as a stripped receiver ready for certified installation into a compliant upper and tested assembly, making it an ideal choice for enthusiasts seeking an authentic FN15/M16 style lower with factory lineage and service rifle provenance.