Well now this I know is not true. They were made in several configurations and all either accept GLOCK or BERETTA mags and apparently S&W and Sig also..I actually own one of these guns and the grip is all one piece with the lower. It is like it is molded altogether. So I doubt there is any way to change the style of mags they take. As for finding one that will take the beretta mags, you won't find one. kel tec did not make one to fit beretta, as beretta makes it own style of rifle.
Cool. Thank you! Sorry I didn't call yet, been shoveling snow and hauling wood.....almost have enough to finish this winter off....Throttlejockey...I am the one that sent you the pm with my cell number last night. I just got off the phone with my friend and he has a 9mm beretta in stock...says he will check around to see if he can find the .40 beretta sub2k. Says he doesn't get much call for them but will attempt to get one. His price usually is 339.00...says don't pay more for it if you find one. I have the 9mm glock version I bought off a member here and love it! Like I said feel free to call me if you need the info.