While I thread every muzzle and buy a can for every threaded muzzle what do I do next? I have too many "22" cans as it is. Too many is how you know when to stop. Gm22, gemtech mist, gemtech sfn, rebel alliance hv 22. Add a 30 cal, 9mm or 2, a 45 and I will be set. Next step, DDs. Obviously an m203. There's all kinds of interesting stuff they can or could fire. But there's a slight problem. The government decided all your Hi-Lo type 40mm low velocity shells are some kind of "dangerous low explosive" even when they have no projectile or an inert chalk powder projectile. Most of the smoke canisters and all the interesting stuff uses hi-lo. Now you get an inert empty shell, say with an inert chalk projectile and make it live with a 38s&w blank. There's no DD dealer in this part of the state. So the only way to get one is make it, buy a bare LMT receiver, register that S/N as both a 37mm and 40mm DD with a barrel length range of 7 to 12 inches, as those are the shortest and longest I have seen and wait for the tax stamp to come back before buying tubes and ammo. Don't say buy a 37mm flare launcher with out registering it and use it to shoot x, y and z projectiles because it's considered a DD at that point even with something as semi harmless as bean bag rounds. I think an rpg7 might be fun. Do it kind of the same way as the 203, but buy a demilled one, register it, get the tax stamp back assuming the demilled rpg has a S/N then buy a repair tube and make it live again, or vice-versa as the repair tube may have the S/N. But the only 2 things I have located to make it go bang are a 7.62x39 training sub caliber devices that fire a single shot AK round at about the same trajectory as a rocket round. The second one I occasionally see is a training blank. It just goes bang, really loud. Doesn't appear to be reusable. Good for scaring the shit out of stray dogs maybe. And that's it. They're cool but not much point in getting one if that's all I can find to shoot out of it. I guess the Russians figured live ammo is best for practice, no chalk rounds. It's so simple a Pakistani dirt farmer who can't read or write their own name can use one. Something to think about, if they can call a low velocity 40mm hi-lo with inert projectile a "dangerous low explosive that needs to be stored in a bunker and can't be shipped by normal means" what's stopping them from declaring all small arms ammo a dangerous low explosive? You are probably on another government watch list just for looking at this.