Lage 1913 Side Folding Stock

(8 customer reviews)

Lage 1913 folding stock for use with receivers that have an M 1913 Picatinny rail mounting point. Easily un-folds and solidly locks in place


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SKU: 3RDLAGESTKCategories: , ,

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The Lage 1913 left folding stock is designed for use with receivers and firearms that have a Picatinny M 1913 rail mounting point. This includes the Angstadt Arms MDP-9, BRN-180 Lower Receivers, Sig Sauer MCX, MPX Copperhead, and many other platforms that utilize a rear picatinny (pic rail) mount. This stock is a combination of Lage’s Picatinny M 1913 Rail Stock Adapter, folding mechanism and Polymer Stock.

Includes everything you need to mount to a folding stock to your 1913 picatinny end rail.


  • Color: Black
  • 7.5″ Buttstock
  • Stock adapter and folding mechanism manufactured from 6061 aluminum and finished in flat black anodize Buttstock is manufactured from glass reinforced nylon, this stock is not only strong, it is more comfortable to shoot in extreme cold or heat than an aluminum stock.
  • Stock can be configured to fold to the right side by reversing the folding mechanism
  • Easily un-folds and solidly locks in place
  • Sling mount on the top rear of the buttstock
  • weight: 13.4 oz
Weight.68 lbs
Dimensions7.5 × 6.1 × 2.4 in

Lage Manufacturing


Lage Manufacturing

8 reviews for Lage 1913 Side Folding Stock

  1. Michael bailey (verified owner)

    Looks great, sturdy very well built

  2. Benjamin Gervacio (verified owner)

    Awesome, looks and good quality

  3. Bobby (verified owner)

    Looks great on my MCX. The left-folding hinge mechanism isn’t the best for a rear-charging AR-type rifle as it can get in the way of pulling the handle all the way back, but it’s nice that you can easily convert this stock to non-folding, which is what I’ve done for now. The hinge itself needed a lot of oiling/greasing and to be broken in a few dozen times before it no longer “sticks” and needs encouragement from a mallet. Overall I think it’s a great stock, especially aesthetically, but is probably best suited for side charging rifles and PCCs.

  4. DB (verified owner)

    The quality exceeded my expectations, the communication from Angstadt Arms was perfect.
    Was the perfect locking folder for my Stribog SPA3 SBR project, I will update after mating items and BATFE approval.

  5. EG (verified owner)

    Great product!

  6. ZIG (verified owner)


  7. Rick (verified owner)

    Extremely fast shipping, received in 3 days from ordering. Product fits loose on MPX-K. Possibly proprietary issue with Sig. Excellent customer service, return product no hassle. Will definitely purchase additional products in the future.

  8. Dan Vancil (verified owner)

    Exactly what I was looking for. Fit my Ruger 5.7×28 LC Charger perfectly and it is now a very accurate varmint gun.

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Lage Side folding Stock with 1913 Adapter
Lage 1913 Side Folding Stock

Out of stock