Radical Firearms, Ar-15 Lower Receiver Stripped Mil-Spec RF00966, Multi Caliber

The Radical Firearms AR-15 Lower Receiver Mil-Spec Forged Stripped offers builders a rugged, reliable foundation for custom AR platforms, combining MIL-SPEC forging with a stripped, serialized lower that requires an FFL transfer and lends itself to multi-caliber configurations for shooters who value flexibility. As part of Radical Firearms' receiver lineup, this lower accepts standard AR-15 parts and control groups, making it a natural choice for gunsmiths, competitive shooters, range instructors, and hunters assembling a tailored rifle for target work, marksmanship training, or field use. The black finish and precise mil-spec dimensions ensure compatibility with mil-spec upper receivers, stocks, and triggers while maintaining durability under repeated use; the serialized nature meets legal requirements and simplifies record keeping through an FFL. Whether you're building a lightweight trainer for the range, a robust hunting rifle when paired with an appropriate upper, or a multi-role rifle for class instruction, this stripped lower gives you the control to select components that match your needs without compromising on standard fitment and long-term serviceability. Keywords: AR-15 lower receiver, stripped lower, Mil-Spec forged, multi-caliber, Radical Firearms, rifle receivers, serialized lower, FFL required.