The AR/MCX stock adapter provides a solution for mounting a picatinny style stock attachment, such as the SIG MPX folding stock, in place of a traditional AR-15 style buffer tube. Many firearms utilize the buffer tube attachment of the AR-15 to mount common stocks and braces but do not require the buffer tube for an in line buffer spring. This product offers a modular alternative for attaching stocks or other accessories to these firearms. The kit consists of two parts and an attaching bolt. The externally threaded adapter plug fits into the threaded buffer socket or ring, while the adapter rail section slots into the plug. The two parts are then secured to the firearm with a hex socket bolt and lock washer. Please note that this product will not work with a standard AR-15 lower and the MCX upper and is intended for use in applications where the carrier and buffer tube do not protrude past the receiver ring.

Constructed from lightweight aluminum
Corrosion-resistant finish for enhanced durability
Compatible with picatinny style stock mounts
Secures to the rifle using a hex socket bolt and lock washer
Designed for rifles without a buffer tube

Report incorrect product description

Reviews

Q & A

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.