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This unique UMP/MP5-style stock is custom designed to use our Modular hinges. This means that now you can use the iconic UMP/MP5-style stock on any firearm that we make a rear adapter for, or most firearms with a rear Picatinny (1913) mount. And, since our hinges can be flipped, this also means that you can Left-fold a UMP/MP5-style stock, something that was never possible before.

Manufactured from durable MJF Polymer with machined reinforcements at the hinge mounting point. Since it can be configured with any of our hinge options, the possibilities are endless.

NOTE: This is a custom stock and must use one of our A3 Tactical hinges to mount to your firearm. 

  • 2-bolt hinge fits all A3 Tactical rear stock adapters
  • A3T Picatinny (1913) hinge fits firearms with rear Picatinny rails



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