The Universe-36 is well Universal. You can use it on nearly any caliber in the known universe from 22LR and 5.56 to .338 Lapua and everything in between as long as it fits down the bore it's good to go. If you want to use it on a 9mm handgun, it can do that. If you want to use it on a full auto 5.56 SBR, it can do that. If you want to use it on a 30-30 lever gun, it can do that. If you want to use it on a big 338 Lapua magnum (out of a 24" or longer barrel) shooting 2000 yards, guess what? Yep, it can do that too. The only limit is your imagination. This is for the person who just wants one suppressor to do it all.