The BRN-16A1 complete upper receiver is designed to replicate the features of the late 1960s U. S. M16A1 rifles. The muzzle is equipped with the classic A1 flash hider, featuring radial ports and secured by a split washer. This flash hider is affixed to a lightweight 20 inches barrel, consistent with AR-15 variants up to the M16A1. For optimal performance with 62 grain or heavier ammunition, select a 1:7 twist rate. The front sight base is not F-marked, ensuring alignment of the round, tapered front sight post with the carry handle rear sight. The black triangle handguards are crafted to closely resemble the original M16A1 handguards. A flat slip ring is positioned at the end of the 5.56x45mm barrel assembly. The upper receiver includes a correctly designed ejection-port cover with a flat external bump, distinct from standard A2 models. The receiver itself adheres to the M16A1 style, featuring a forward assist but lacking a shell deflector. The rear sight is the standard A1 aperture, adjustable with a cartridge or tool. The included Bolt carrier group is a manganese phosphate mil-spec BCG with a chrome-lined interior.

M16A1 upper receiver lacking shell deflector
20 inches barrel chambered for 5.56x45mm, featuring a 1:7 twist rate and a chrome-lined bore and chamber
Ejection port cover for M16A1
Teardrop forward assist
A1 rear sight component assembly
A1 black polymer handguards equipped with integrated heat shields
Manganese phosphate mil-spec Bolt carrier group featuring a 9310 steel bolt
A1 flash suppressor

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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.