The EPC-9 complete upper receiver is equipped with the enhanced Gen 2 handguard. The enhanced M-LOK handguards offer a lightweight, free-floating design suitable for custom builds. The M-LOK system facilitates advanced modularity beyond the traditional 1913 picatinny rail system. Precision-machined to mil-spec dimensions and engineered for optimal performance, this handguard minimizes bulk while maintaining strength and stability.

Upper receiver with last round bolt hold open mechanism
Upper receiver with standard AR-15 takedown/pivot pin lug configuration
The upper receiver is precision-engineered from custom-forged 7075-T6 aluminum
Compatible upper receiver for Aero Precision AR-15 enhanced and quantum handguards
Single-piece free-float design handguard
Integrated anti-rotation tabs in handguard
Scalloped rails handguard
Continuous top rail for handguard
The handguard features an internal diameter of 1.72 inches, extending from the barrel nut cut to the forward end and is compatible with most muzzle devices and suppressors measuring up to 1-1/2 inches in diameter
The internal diameter of the barrel nut cut area on the handguard measures 1.78 inches
Handguard designed for compatibility with low-profile gas blocks
The handguard is equipped with quick disconnect sling sockets located at the 3, 6 and 9 o'clock positions
The handguard features supplementary milling along the flats to enhance grip and improve visual aesthetics
Updated configuration of the picatinny top rail handguard
Twist rate is 1:10
1/2-28 unified national fine (UNF) thread
The barrel is constructed from chrome moly vanadium steel and features a QPQ corrosion-resistant finish applied to both the interior and exterior surfaces

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Shipping Restrictions

It is the customer’s responsibility for understanding state laws regarding all purchases made. For a comprehensive list of all Shipping Restrictions, please refer to our Shipping Restrictions By State Page found Here.

All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

Local Law Compliance

Certain firearm parts and accessories, including AR-style upper receivers, are subject to complex and frequently changing federal, state, and local laws and regulations. While an upper receiver may be lawfully sold and shipped as a component, the legality of possessing, assembling, configuring, or using an upper receiver in certain states (e.g., California, Washington State) and localities depends on how it is assembled, combined with other components, and ultimately used. You are solely responsible for ensuring that any assembly, configuration, possession, or use complies with all federal, state, and local laws, including any so-called “assault weapon” bans and short-barreled rifle restrictions. We do not provide legal advice and are not responsible for unlawful configurations or uses.