The Radical Firearms RF-15 Complete Lower Receiver provides a ready-to-build foundation for your next 5.56 NATO AR-15. Forged from durable 7075-T6 aluminum and finished in a black hardcoat anodize, this assembled lower arrives with a mil-spec fire control group, A2 pistol grip, and M4 collapsible stock so you can focus on selecting the perfect upper to complete your rifle.

This RF-15 lower is ideal for shooters who want a straightforward, reliable starting point for a range, training, or general-purpose AR build. The adjustable M4 stock helps tailor length of pull for different shooters or shooting positions, while the familiar A2 grip offers secure control. Pair it with your preferred 5.56 NATO upper and you have a dependable platform backed by Radical Firearms’ reputation for practical, well-built AR components.

Key Features:

• Manufacturer: Radical Firearms
• Model: RF-15 Complete Lower Receiver
• Caliber: 5.56 NATO
• Stock: M4 Collapsible
• Grip: A2 Pistol Grip
• Material: Forged 7075-T6 Aluminum
• Finish: Black Hardcoat Anodized
• Configuration: Assembled Lower Receiver