Aero Precision M4E1, Semi-automatic, Stripped Lower Receiver, 223 Remington/556NATO, Anodized Finish, Black APAR600001C

The M4E1 Lower Receiver delivers billet aesthetics in a forged package. This custom designed enhanced forging is machined from 7075-T6 Aluminum and compatible with all mil-spec AR15 parts. Aside from the visual upgrades this custom engineered design provides that challenge much more expensive billet options, we have added several functional features to the lower receiver to simplify the assembly process for the at home builder.

• Threaded Bolt Catch Roll Pin
• Integrated Trigger Guard
• Upper Tension Screw
• threaded Takedown Pin Detent Recess
• Increased Magwell Flare
• Marked and milled to accept short-throw safety selectors, but will work with standard selectors as well
• Works with standard AR15 components and magazines
• Perfect base for your custom AR15 build
• Machined to mil-spec dimension