The CMMG Mk4 is a stripped lower receiver designed for AR-15 builds. It is precision machined from forged 7075-T6 aluminum and finished in Armor Black Cerakote.

Its stripped configuration provides a starting point for assembly with a compatible mil-spec lower parts kit.

Key Specifications

• The product type is a stripped lower receiver.
• The receiver is designed for the AR-15 platform.
• The model is Mk4.
• The construction is listed as forged 7075-T6 aluminum.
• The finish is Armor Black Cerakote.
• The listed action is semi-automatic.
• The supplied dimensions are 2.45 x 4.55 x 10.60 inches.
• The receiver is intended for assembly with a compatible mil-spec lower parts kit.

With its established AR-15 format, forged aluminum construction, and durable Cerakote finish, the CMMG Mk4 offers a straightforward platform component for a carefully planned build.