Civilian legal "Grenade" launcher mailed right to your front door?! u gotta check this out. 

The Spikes Tactical 37mm launcher. This is the Havoc launcher mounted on the Chaos platform. I've seen a few videos on RU-vid about it but honestly none that cover as much shooting time or information as you'll find on this video. I'll talk about the legalities and show you operation and what it looks like when you're putting rounds down range both in daylight and after dark. You won't want to miss out on this one so stop by and give it a watch.