I recieved my SP-01 Phantom in December, a Christmas present, actually, and was enthralled the moment I picked it up. Those great CZ ergonomics, and the balance was perfect. 18 round magazine didn't hurt, either! At the range it did QUITE well with a plethora of factory and reloaded ammo. First rounds ever fired, BTW. It really liked one cast load, It never failed to feed, fire, extract or eject. Everything was as good as it gets, for me. It comes with two backstraps, but I left the shipped one in place, as it felt just fine. Hopefully I'll be getting a Falco shoulder holster to evaluate soon, as the one draw back to the new choice of the Czech military is this - holsters aren't as easy to come by as others. I am told Glock 22 rigs should fit, haven't tried one yet, but what I can say is with about 400 rounds through this gun, I want a good holster, becasue I am going to carry it.