Radical Complete Lower Receiver

The Radical Complete Lower Receiver (Model RF01522) is a fully assembled, drop-in lower receiver platform designed for shooters and gunsmiths building or upgrading AR-pattern rifles. This component serves as the licensed firearm foundation, housing the trigger group, hammer assembly, and fire control mechanism, making it the critical serialized component that defines your build's legal status and performance baseline. A quality lower receiver is essential for reliability and longevity in various applications, including precision rifles and home defense platforms.

Machined from 7075-T6 aluminum alloy, the Radical Complete Lower Receiver offers superior strength-to-weight characteristics while maintaining rigidity under sustained use. Weighing 2.63 lbs, this lower balances structural integrity with ergonomic handling, making it suitable for extended shooting sessions or defensive training. This lower receiver is designed to meet the functional assembly standards required for reliable performance.

Operators, armorers, and civilian builders will find value in the Radical Complete Lower Receiver, which accepts any mil-spec upper receiver. This compatibility ensures seamless integration with various upper receivers, enhancing the versatility of your firearm build. Whether you are constructing a patrol carbine or a custom rifle, this lower receiver provides a reliable foundation for your project.