Thordsen Customs Picatinny Buffer Tube Adapter

This Picainny Buffer Tube Adapter is a great addition to any Sig MPX, Sig MCX, 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 cheek rest 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 resulting perfect alignment with the centerline of the firearm is not attainable with typical side clamping adapters. In addition, there are no visible fasteners or holes on the top and sides of the adapter for a clean sleek look.