AR/MCX Adapter & Stock COMBO




The AR/MCX Stock Adapter allows the user to mount a picatinny-style stock attachment (such as the SIG MPX folding stock) in place of an AR15 style buffer tube. Many firearms utilize the buffer tube attachment of the AR15 in order to mount common stocks & braces, but do not mechanically require the tube for an in-line buffer spring. For these weapons, this product offers a modular alternative for attaching stocks or other accessories.

The kit is composed of two parts and an attaching bolt. The externally-threaded adapter plug fits into the threaded buffer socket or ring. The adapter rail section firs into the slot in the adapter plug and the two are secured to each other and the firearm by a hex-socket bolt and lock washer.

This combo kit includes the KNS AR/MCX Stock Adapter with OR without Flange AND the Sig Sauer MCX folding stock.

Note – Standard configuration AR15 style rifles that require a traditional buffer/buffer tube system will not function using this product.

**NOTE: The unit including a FLANGE in the base of the picatinny plate will allow the use of a standard takedown pin, detent, and spring on traditional AR15 lower receivers.

Additional information

Weight 2 lbs
Dimensions 12 × 4 × 2 in

AR/MCX Stock Combo WITH Flange, AR/MCX Stock Combo WITHOUT Flange


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