For every upside there is a downside and there are a lot of downsides. Its basically a 9mm pistol can that is build heavier with stronger materials. You can use it on a 22lr for example, but it extremely big and heavy for that application, you'd be much happier with a dedicated 22lr suppressor that is a fraction of the weight. Also most other 9mm cans that are much lighter can be used the same rimfire calibers, they are much lighter, and their cones can be tumbled. For just pistol use it is pretty heavy as well, it weighs 60%+ more than a AAC Tirant 9, obviously weight is a huge issue on a handgun. The 5.56 use is limited to a 16" barrel and it direct thread, almost everyone that suppresses a AR does it on a SBR, so no good here, because it is direct thread you pretty much have to have a dedicated upper for it that does not have a muzzle device installed, and it is not like you can abuse it then. It is one of the lightest options that supports subsonic and supersonic 300blk. For someone that only wants a 300blk suppressor, or only a 300blk + 9mm rifle + heavy 22lr rifle it would be a good choice.