Technically it's just a really long choke tube / barrel extension 
I saw a couple mentions here, but not much data.
They only way to pay is check via snail mail.
I kinda wanted a salvo but couldn't handle the cost or wait for such blah reviews. Despite the metrogun 25" length it should handle decently due to lighter weight relative to the salvo.
I'm anxious to have a go - the mailman should carry off my payment today.
I have a half dozen or more cans but wanted something for the shotgun- due to ricochet concerns I'm using them more and more for predators around the homestead.
Will give a report when it comes in.

I saw a couple mentions here, but not much data.
They only way to pay is check via snail mail.
I kinda wanted a salvo but couldn't handle the cost or wait for such blah reviews. Despite the metrogun 25" length it should handle decently due to lighter weight relative to the salvo.
I'm anxious to have a go - the mailman should carry off my payment today.
I have a half dozen or more cans but wanted something for the shotgun- due to ricochet concerns I'm using them more and more for predators around the homestead.
Will give a report when it comes in.