Aero Precision EPC-9 Upper Receiver | 9mm | APAR620201AC

The Aero Precision EPC-9 threaded upper receiver is designed for AR-9 platform builds and range or competition use. Machined from custom forged 7075-T6 aluminum and finished in black anodize, the EPC-9 ships assembled with a pre-installed last-round bolt hold open (LRBHO). It accepts most AR-15 compatible barrel nuts and handguards and includes timing features to ease installation of common handguard systems.

Product Specifications

• The manufacturer is Aero Precision.
• The model is EPC-9.
• The manufacturer part number is APAR620201AC.
• The caliber is 9mm.
• The finish is Black Anodized.
• The receiver is machined from 7075-T6 aluminum.
• It accepts most AR-15 compatible barrel nuts and handguards for broad accessory compatibility.
• A dimple above the threads provides proper handguard timing.
• The receiver uses a standard AR15 takedown/pivot pin lug pattern.
• The unit includes a pre-installed last-round bolt hold open (LRBHO) assembly.
• The muzzle threads are 1/2-28.
• The listed rate of twist is 1-10.
• The style is listed as Complete.
• The UPC is 840014611782.

Whether assembling a pistol-caliber AR for regular range work or setting up a competition-ready platform, the EPC-9 upper provides a durable, feature-rich foundation. Its machined 7075-T6 construction and AR-15 compatibility simplify integration with common handguards and accessory patterns while the pre-installed LRBHO adds a convenience feature for follow-up handling.