The Aero Precision EPC-9 upper receiver is an ideal upgrade for any AR9 build. Featuring a last-round bolt hold-open mechanism and compatibility with most standard AR-15 barrel nuts and handguards, this upper brings enhanced function and versatility to your pistol-caliber setup.
Features:
Last round bolt hold open mechanism
Accepts most AR15 compatible barrel nuts and handguards
Dimple above threads to allow for proper handguard timing
Standard AR15 takedown/pivot pin lug pattern
Machined from custom forged 7075-T6 aluminum
Laser engraved T-marks
Pre-installed last round bolt hold open assembly
ompatible with appropriate GLOCK Magazines
