Made from high quality aerospace 7075 T6 Aluminum, the Airborne Arms AAM4 stripped lower receiver has multi caliber marking for build versatility, precision through holes with above mil-spec tolerances, an M16 specification internal pocket, and is finished with a stainless-steel blast and type III class 2 black anodizing per MIL-A-8625F specifications. With its tried-and-true design the AAM4 stripped lower ensures compatibility with all components and accessories designed for a mil-spec shaped lower while living up to the precision lineage our customers have come to know and trust from Airborne Arms.

Specifications:

• High quality and tested Aerospace 7075-T6 Aluminum Alloy Raw Forging
• Precision Mil-Spec Size Holes for the Pivot Pin, Takedown Pin, Hammer Pin, Trigger Pin, and Safety Selector
• MIL-A-8625F, Type III, Class 2, Hard Anodized Flat Black Finish
• Compatible with Mil Standard AR Lower Receiver Parts
• M16 Specification internal pocket
• Weight: 7.9 oz
• All Components, material, and packaging made in the USA