The ATI Milsport complete upper 5.56x45mm is a compact, high-performance upgrade designed for speed, accuracy and reliability. Featuring a 7.5 inches 5.56 NATO barrel with a 1:8 twist for enhanced stability, a 7 inches M-LOK C-Clamp handguard for superior grip and accessory mounting and a complete bolt carrier group (BCG) and charging handle (CH), this upper is ready to go right out of the box. Whether for tactical applications, home defense or range shooting, this upper delivers exceptional control, durability and precision in a compact package. Upgrade your AR today with ATI's proven performance!.

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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 lower and upper receivers and threaded barrels, are subject to complex and frequently changing federal, state, and local laws and regulations. While a part may be lawfully sold and shipped as a component, the legality of possessing, assembling, configuring, or using it in certain states (e.g., California, Washington State, Virginia, Rhode Island) 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.