Aero Precision EPC-9 12.7" ATLAS R-ONE Builder's Set - Black Anodized

Aero Precision EPC-9 12.7″ ATLAS R-ONE Builder’s Set – Black Anodized

The Aero Precision EPC-9 ATLAS Builder’s Sets offered by Arm or Ally are a perfect way to get your EPC/AR9 PCC build headed in the right direction using key components designed to fit and function together as one solid unit.

Builder’s Sets Include

• EPC-9 Threaded Upper Receiver – Black Anodized
• EPC-9 Stripped Lower Receiver -Black Anodized
• 12.7″ ATLAS R-ONE M-LOK Handguards – Black Anodized

*Note: Barrel Nut & Mounting Kit included.

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

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

ATLAS R-ONE Handguard

The new Aero Taper Lock Attachment System (ATLAS) is functional and aesthetically pleasing. It features two mirrored tapered locking nuts that provide evenly distributed clamping pressure across a custom-engineered barrel nut using a turnbuckle screw. A ratcheting detent further secures the design while providing positive registration during installation. By design, the even pressure of the ATLAS system avoids distortion of the handguard often seen with current applications during installation.

Handguard Features:

• Continuous top Picatinny rail
• Quick disconnect sling socket at the 3, 6, and 9 o’clock positions
• Compatible with low-profile gas blocks
• 1.5″ Inside diameter
• Compatible with mil-spec AR15 upper receivers and barrels