What's the best handgun caliber? Some of people say that 9mm is the best because it has a high magazine capacity. Other people say that 10mm is the best because it has near-magnum power, given the right ammo. I say that 40mm is much better than either of them. This is one of several versions of M203 grenade launcher made by LMT. Sure, it's "only" a single shot, but have you ever heard of anyone needing double taps from a 40mm to take them down? I believe one shot will suffice, thank you very much. And reloading isn't too slow once you get the hang of it. The MIL-STD-1913 Picatinny rail allows you to mount whatever sights you desire on your pistol. And it's up to you to determine how critical you think shot placement is. "Close" may be close enough. And if you want to add a tactical pistol brace (it only looks like a stock), no problem! They've got you covered there too. LMT has all the 40mm handguns and handgun accessories you need. Maybe you're thinking, "But Frank, I need something for concealed carry." Well, that's where the Shorty 40 comes in. You see, there really is a 40mm pistol for every gun owner and every occasion, whether you want a 7", 9" or 12" barrel length. With or with a stabilizing brace. Iron sights, LPVO, tactical light, bipod, and laser designator for painting targets? Sure, what do you think they make quad-rail adaptors for? It's modular so you can put it together any way you like, just like an AR-15 AKA Lego for adults.