MCX/MPX AR-15 Stock Adapter V2, 3 Slot

This product has 3 slots instead of 2 for use with stocks and braces that use a center lug.

Stock adapter for using Sig style MPX/MCX folding stocks and braces on our 10/22 Chassis or AR-15’s with a 22LR conversion.

Compatible stocks: A3 Tactical, Midwest Industries

If you’re using a Sig or SB Tactical brace, use the original 2 slot version. https://engineeredsilence.com/product/picrailbuffer/

Billet 6061 T6 Aluminum Black Type III Hardcoat Anodizing.

*Gun and stock are not included

*Does not work with standard Semi-auto AR-15 recoil system.

Works with many chassis that accept AR-15 buffer tubes, Brownells BRN-180 uppers, Sig P556 pistols, Kriss Vector pistols as well as many others.