The AR-10 upper receiver block is designed to provide comprehensive support to the upper receiver during barrel installation or removal, effectively preventing damage from torque twisting forces. The block consists of (2) halves - the upper half, which inserts into the AR-10 receiver similarly to a bolt carrier group, and the bottom half, which can be securely bolted to the upper half using the included steel bolts. This configuration ensures full support for both the interior and bottom of the AR-10 receiver while keeping the optics rail accessible for mounting accessories and optics. Additionally, the block features a longitudinal hole that serves as a bore brush guide, facilitating efficient cleaning of the barrel bore.

Made from blue anodized aluminum

Report incorrect product description

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.

NcStar 8.40" x 2" x 3.10" Upper Receiver Block, Blue