The 17 Design & Manufacturing billet AR-15 stripped lower receiver is a machined foundation for your custom AR-15 build. It is made to mil-spec dimensions for parts interchangeability while offering build features like an upper tensioning screw and a flared magwell angle for improved fit and feel.

Key features

• Machined to mil-spec AR-15 dimensions for compatibility with standard AR-15 components
• Upper tensioning screw allows fine-tuning the upper-to-lower fit
• Flared magwell angle for an easier, more positive magazine seating feel
• Threaded bolt catch pin feature
• Billet machining with tight tolerance focus to support reliable part interchangeability

Use this stripped lower as the foundation for your next AR-15 build and select the upper, barrel, and accessories that match your intended use.