MAKO/FAB DEFENSE Picatinny Grip Versatile Tactical Support (VTS)

In various test configurations on the AR pistol I'm building, this part has worked well as both the thumbrest they suggest and a front hand-stop, and it does make an ideal partner to the PTK angled foregrip. (Right now I have them set up so as my fingers wrap around the bottom-rail's PTK, the VTS on the side rail supports my thumb in just the right position to hit the tailcap switch on my light with the thumbtip and the tape-switch for a laser with the palm, all while maintaining a firm "locked" grip on the front end.) Even considered buying two to make a kind of "baby bipod" for shooting from benches, barricades and other supports...