Was at the range today sighting in a newly installed Aim Sports 4X30 Dual III. Rubber Armored Scope on my HP 995TS, also new, and the compensator popped off again. I have re-installed it 3 time tightening the hex screw as tight as practical without twisting off the screw head. I realize that it is mostly cosmetic. On the bright side this combination, along with a UTG bipod, shoots like a bandit at 25 & 50 yards chewing the center out of the black circle on the targets. I was using some circa 1988 S Korean ammo with no misfires!!