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Thordsen Customs Picatinny Buffer Tube Adapter

Posted on October 20th, 2015 by ar15news

Thordsen Customs just introduced their new Picatinny Buffer Tube Adapter. This adapter will allow you to mount an AR Buffer Tube (pistol or carbine) to any gun with a vertical rear picatinny rail section. Guns such as the very popular Sig MPX typically come as a Pistol from the factory. The end user can now attach a buffer tube to use items such as the Thordsen Customs AR Pistol Cheek Rest Kit, Sig SB15 arm brace, Shockwave Stabilizer or if they have SBR’d the pistol they can easily add a collapsible AR-15 stock once the stamp comes back. If you’re looking for something like this, head on over to and check them out.

Thordsen Customs Picatinny Buffer Tube Adapter 1

Thordsen Customs Picatinny Buffer Tube Adapter 1

Our new Picatinny Buffer Tube Adapter is a great addition to your Sig MPX, Sig P556XI, Rock River PDS, or any other pistol that utilizes a rear vertical picatinny rail. It gives a shooter the ability to add a cheekrest for greater stability or a stock for SBR conversions (federal tax stamp required).

The mounting method follows true STANAG (NATO Standard Agreement) protocol using the two back angles and the top of the rail as the contact points. The result is perfect alignment with the centerline of the firearm. A feature that is not attainable with typical side clamping adapters. Another bonus is that there are no visible fasteners or holes on the top and sides of the adapter for a clean sleek look.


  • Compatible with multiple platforms
  • Fits any picatinny rail
  • True STANAG mount
  • Includes set screw for carbine buffer tubes
  • Engraved TC logo
  • 304 stainless steel hardware


  • 6061 T6 Aluminum
  • Type III Hard Anodize finish
  • Weight: 2.5 oz.
  • Width 1.37 inches, Height 1.4 inches

Made in USA

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