Lage Manufacturing

MCX Stock Adapter

Picatinny M1913 Stock Adapter #357


This stock adapter is designed for use with the SIG MCX pistol or rifle. It can also be used with the SIG 556 rifle and on any M1913 Picatinny Mount. For the MCX, it is compatible with all of our stocks and left folding stock mechanisms. Our right folding stock mechanisms are not compatible due to the forward assist on the right side of the Upper.
For the SIG 556 or Rock River Arms LAR-PDS, all of our stocks and folding stock mechanisms are compatible, left or right folding. Additionally, it is compatible with any ACE Rifle Stock patterned stock or folding stock mechanism with two #10-32 mounting screw holes spaced 5/8" (.625") apart. This is also a standard mounting pattern for stocks made by Manticore Arms, DPH, Stormwerkz, HDPS and more. With the addition of our AR-15 Stock Adapter, a commercial or Mil-Spec' buffer tube can be added to attach an AR stock, SIG Brace or Shockwave Blade. Secures with one screw. Manufactured from 6061 aluminum and finished in flat black anodize. Adds .40" to the rear of the receiver. Weighs 2.0 Ounces. Made in the U.S.A. #357