Wish my stepson was here to tell you exactlyabout his. What I know about his is that it is a 40 cal polymar and he is waiting fora new gun to be shipped back to him now and he is going to sell it unfired when he gets it back. His Kahr 40 cal started having part of the slide guides (not sure if that is correct terminolgy) chipping off and the dealer he bought it from said they were glad he brought it back when he did that it was in a very dangerous state and at any time could have had the slide blow off of it when shot. They sent it back to Kahr and he is waiting to hear back from them now.