Chater arms released the 40 cal revolver a couple of years ago but now have released the 9mm & 45acp revolvers . They do not require moon clips which is the best part . I love both 9mm & 45acp so this is a win win for me . The ejector rod design secures the rimless cartridge withe spring tension pieces . CARR - (charter arms rimless revolver) I found 9mm ones at Centerfire Systems online but haven't found a 45 yet . Charter Arms said within the nest month they will be more readily available. Centerfire systems has the 9mm for $329. For you all that like your semi calibers but would like a revolver version w/out the hassle of moon clips I thought I'd pass the info on.