it's a fad- basically a 45 colt with cylinders long enough to handle 410 shot shells- it works b/c both cartridges are rimmed, so headspace is not an issue, but the bullet jump when using 45 colt must be considerable- and it uses a rifled barrel- that's an issue with ANY thing using shotshells ( pattern deformation) in a rifle barrel unless you use a shot cup - that keeps the stuff together until it exits the barrel- you want to see, this, get any 22 and fire a couple of 22 shot shells in it- and that's the result of the rifled barrel- basically it's a 45 colt trying to do 2 jobs, does neither one well, and b/c it's a restricted, what's the point- you can only use it on paper- i should doubt if you EVER see any in canada, for the reasons i stated and lack of a deaership willing to bring them in