Dunno How many of yall are interested/into Grenade Launcher type devices. But the cheap legal way is the 37mm launcher.....
For those not in the know about these interesting devices they are pretty much just like a m-203 or a m-79 type destructive device, but seeing as they are meant for launching "flares" they arent subject to those annoying NFA laws. You can pick up one of these handy dandy toys at gunshows or online at several distributors. Ive had a CMP CM-3 "Slam Fire" Launcher and a Cobray CM2037 for a few months and havent had a single problem with either of them.
The CMP launcher would be easy to manufacture, as soon as I get some DOM pipe of the right ID Ill get around to making one and post a how to for all yall that would rather make their own if anyones interested.
References, Suppliers and Information.
Information
http://www.37mm.com (Best resource out there in my openion)
http://www.okiebigbores.com/ Supplier of reloading hulls and Information on constructing "Wild life control devices"
http://www.brassmanbrass.com good metal hull supplier
http://www.geocities.com/lars_ekstro...7mm_page2.html
Pictorial Reloading information
http://www.cmp45.com/pages/3/index.htm
CMP Launchers, 75$ for the cmp-3