The Aero Precision EPC-9 receiver set is Precision machined from 2 custom 7075-T6 Aluminum forgings and features a last round bolt hold open. This EPC-9 Receiver Set is compatible with standard frame Glock magazines and accepts 9×19 or .40S&W when using the appropriate bolt carrier, barrel and magazine combination.

EPC-9 Lower Receiver Features:

• Threaded bolt catch pin for easy installation
• Integrated enlarged trigger guard to remove any risk of breaking off trigger guard tabs, and provide an overall more rugged platform to build on
• Threaded takedown pin detent recess to allow for the installation of a detent and spring with a single 4-40 set screw
• Flared magazine well for quick and easy reloads
• Proprietary components pre-installed from the factory
• Standard AR15 takedown/pivot pin lug pattern
• Machined from custom forged 7075-T6 aluminum

EPC-9 Upper Receiver Features:

• Last round bolt hold open mechanism
• Accepts most AR15 compatible barrel nuts and handguards
• Dimple above receiver threads provides a visual reference for proper handguard timing when needed
• Standard AR15 takedown/pivot pin lug pattern
• Machined from custom forged 7075-T6 aluminum