FREE SHIPPING & FREE RETURNS*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
SIG SAUER Stock, Mcx, Mpx, Sig Folding & Telescoping
$249.99 $213.19 Save 15%
View Product
Compare (0)
Most Helpful Positive Review The best stock for the MCX/MPX and similar weapons with 1913 stock mounts
Tis stock folds very thin, nearly as thin as the skeleton stock, but has a significantly better cheek weld and is adjustable for length. Weight is similar to the skeleton stock. Only Ape Defense currently makes a cheek riser for it, but it is very good in my opinion. Otherwise it would be nice to have more accessories for it.
Show
Sort by
Filter by

Fit good - controls VERY stiff

by Dave-in-Texarkana, Verified Owner from TX, United States Written on September 1, 2025
Received in a surprisingly timely manner. The Picatinny attachment bracket is solid and accurate to 1913 specs.
The opened position does not have a lot of slop or play.
The controls are VERY stiff - I have good hand strength (paramedic for decades lifting cots) but the angle to push the stock extension button requires a specific angle and sometimes both hands. It does seem to be getting slightly looser as I break it in, can just use one hand now.
The fold open mechanism is to lift up on the stock at the Picatinny bracket and this pivot point/spring is exceptionally strong. There may be manufacturing tolerance issues, I'm not sure. I relubricated it which helped somewhat, but you have to hold it low on the gun side and pull hard on the other side to raise the back portion up enough to collapse it.
It does collapse to the left side of the gun, leaving the ejection port unobstructed, which is nice. I tried mine on a Kuna with a non-reciprocating bolt so I know it can be shot collapsed.
I recommend this item with the caveats above. I'll update this if it 'loosens up' more to the point of fairly easy manipulation of the extension and folding mechanics.
I didn't see the specs list the over all length but it is SHORT - puts your eye right at the back of the weapon's rear sight. Some may find this disconcerting, doesn't feel like a normal rifle setup - more compressed.
Pros:
  • Good fit
  • little slop
Cons:
  • controls VERY stiff
Best Used for:
  • SBR weapon
Would recommend: Yes
Was it helpful to you? Yes | No

Folding & Extendable

by Kevin, Verified Owner from FL, United States Written on August 31, 2025
Looking for a folding brace for an MCX type pistol. Found this one that extends as well. Loving it.
Pros:
  • Sleek, adjustable
Cons:
  • Spring needs using several times to make it easier to fold back up.
Best Used for:
  • MCX 300 blackout.
Would recommend: Yes
Was it helpful to you? Yes | No
There are no reviews that match your criteria. Would you like to review this product?