I have had a semi auto M1 Thompson (16 in barrel) for several years (it is a Kahr). I like (not love) it and have fun with it, BUT, I have had small internal parts break and have had to replace them. This gun is heavy and it is a real pain to break down. I got it because I love WWII US arms (1911, Garand, Carbine, etc...) I think, I paid approx $800. I plan to keep it, but I would not have spent any more than I did in order to get my hands on one.