Yes, the conversion kit is a complete upper that fits nicely on top of a g21 frame. Even comes with a mag I think. This of course is not really an "all the time" range gun, as you'll see once you discover the price of the ammo. It is an option though, so I figured I'd let ya know!!!Gizmo said:Thanks Jeff C . Can I get by with just the G21 frame? Or do I need the whole pistol? I looked up the conversion kit on Brownell's and it goes for $599.99. Gulp, I can see this project is going to set me back a grand no matter what.