Originally Posted by MultipleParadox
I recall reading they sell adaptors so you can use different callibers; I don't recall seeing .22 but I'd be surprised if it wouldn't be in that list
After some research, I found that they have shotgun primer .209 adapter for sale.
v.t.g .209 adapter
I think that this would better for CQB. Personaly, I think that 120dB for insode is much too loud and can be dangerous to a point.