Index the brake on the adapter to work when its tight to the front sight base. It works, and is quick and easy.Īs for the thread adapters, I got one years ago, to add a zig zag brake onto a SAR 2, it shot off, using standard screws, so the solution was. You can grind out the thread on the Break/Nut itself, and epoxy them on, I have done it, and they can be removed easily with heat gun or torch to melt the epoxy if you decide to thread later.