Our ORIGINAL Picatinny Buffer Tube Adapter is a great addition to your 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). FREE FFL transfer when you ship to your local Rural King store! Sign up for the RK Guns newsletter and be the first to know about hot deals and special offers. Shop for guns online then pick them up in-store.
AK Pattern (68) Other Semi-Auto Rifles (19) ... Pistol Brace Adapters (10) Pistol Braces (20) ... SBT-SBA3. SB Tactical SBA3.