Looks nice but... - Gear Head Works Tailhook Mod 2 Telescoping Pistol Stabilizing Brace

The brace is too loose on the supplied with the propritary buffer tube. It is proprietary so it should fit tight and smooth since its theirs. after installation there is no way to index it and tighten thentube to the receiver.? It appears that you have to purchase two parts in addition to the brace, as the tube will turn without the castlw nut and rear receiver plate. I am confused, suppose to have that. but not sure what to do now. the facts indicate that its parts that are on it. that aside it looks good but as before very much wiggle on thier tube.