Letting folks try the .50AE at your range, too nice, probably have some turn it down, it's a what? uhh, no thanks! I can see the need for the slide knob, mine takes quite a bit of effort to rack back. Did you install a recoil bushing? I was wondering about durability with all the cast parts that are used, I'd rather see a forged/milled slide stop, and barrel bushing. The rubber boot for the grip is a good idea and I'll have to swipe the one off my Kel-tec 2000. I did hear as well about the AMT line coming back, from the Crusader gun co. but think the .50AE will not be included. I think the company is the same one trying to bring back the High Standard line of target pistols, which Mitchell produced last in Tx. Hows the accuracy of yours?