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AR-15 Buffer Tube Adapter for SIG MPX Pistol

Posted on August 18th, 2015 by ar15news

KAK Industry is introducing their new AR-15 Buffer Tube Adapter for the SIG SAUER MPX Pistol. This is pretty exciting as many people who bought the MPX Pistol are still waiting waiting for SIG to release stocks adapters for them. With the new KAK Industry AR-15 Buffer Tube Adapter, MPX Pistol owners will be able to attach any AR-15 Buffer Tubes. This will allow the use of Pistol Braces like the Shockwave or SB-15 or if the MPX has been SBR’d they will be able to install a standard AR-15 buffer tube and add any AR-15 stock they want. Here are some pictures of the first unit off the machines just before heading off to be anodized.

Sig Sauer MPX Pistol Buffer Tube Adapter 1Here you can see the rail section at the rear of the MPX that the adapter mounts to.

Sig Sauer MPX Pistol Buffer Tube Adapter 1

Sig Sauer MPX Pistol Buffer Tube Adapter 1

Sig Sauer MPX Pistol Buffer Tube Adapter 1

The KAK Industry AR-15 Buffer Tube Adapter for SIG MPX Pistols is machined from 6061-T6 aluminum. It installs onto the rail section on the rear of the MPX Pistol and uses 3 cross bolts to securely lock it in place. It also comes with two set screws that will lock into the indexing channel on the bottom of most buffer tubes, then tighten down the castle nut to make it extremely solid. The retail units will all be anodized black and start shipping around 8/25/15. Get in on the pre-order at just $43 for the kit at

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