This 16 inches M4 Profile barrelled upper assembly from our popular MPC carbine, is complete and ready to snap onto your Lower Receiver. The highly accurate 16 inches M4 barrel is machined from 4150 Chrome Moly Vanadium 11595E steel - rifled 1:9 inches right hand twist, and chrome lined for long wear and easy cleaning. An A2 flash suppressor and standard A2 front sight are fitted, and the machined aluminum flat top Upper Receiver is complete with bolt, bolt carrier assembly, charging handle, forward assist, ejection port cover, and removable A4 carry handle with 300 to 600 m dual aperture rear sight.

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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.