Rock River Arms has established a longstanding reputation for producing high-quality firearms trusted by military, law enforcement, hunters and shooting enthusiasts of all kinds. Their complete upper receivers offer a convenient solution for finishing rifle builds or swiftly changing calibers on your preferred AR-15 platform. This complete upper receiver is chambered in .300 AAC Blackout, a versatile and increasingly popular cartridge. It features a 16 inches chrome moly steel barrel equipped with a flash hider, effectively reducing muzzle signature and felt recoil. Additionally, the upper boasts a lightweight 12.5 inches aluminum free-float handguard with M-LOK slots, facilitating easy attachment of M-LOK compatible accessories such as bipods, foregrips and lights. A full-length picatinny rail on top provides ample space for mounting optics or flip-up sights to suit your shooting needs. Complete with a bolt carrier group and charging handle, this upper is ready-to be attached to any standard AR-15 lower receiver, offering versatility and reliable performance in various shooting applications.

Reviews

Q & A

Retail Stock

Compliance

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.