The can thing probably comes from an apprehension that certain CLEOs have with suppressors. I have heard on the boards that some folks can't get a sheriff to sign off on cans. I don't know anyone in Colorado that has that policy.

Hollywood has everyone thinking that only CIA agents and hit men have a use for these. In some countries (Finland, Germany and France FWIH), they aren't even regulated items. They're hearing protection. Go figure.

Here's the accessories for a Walther P22 from the German site by way of example. Check out the third accessory item from the top. The pistol case at the bottom of the page is molded to hold the can too.

http://www.carl-walther.de/englisch/...efense-55.html