Great for a SBR or AR Pistol. Be ready for an initial adjustment of the T Nut though. It comes with the t nut at the end of the screw where it will not lock (lok?) in. A pair of non marring pliers and a Torx T15 screwdriver and you'll have it properly adjusted in no time. Easy on, easy off and locks in solid. Now I've got a great way to push out on my AR pistol and stabilize it with sling tension. Very much recommended.