Here's the situation. Kahr CM9 around 4 years old, aprox 500-600 rounds. The pistol has been basically flawless with a few exceptions. The problem is it will not feed a round. It gets hung up everytime, rght before going into the chamber not allowing the slide to close. It does it with both magazines. It does it with a new recoil spring. It FTF's in every situation. This aoccured halfway through a box of ammo. I have tried different ammo as well as taking apart and reassembling. Any ideas would be appreciated. Thanks in advance for your help. PS I am not a smithy. I'll check back later, thanks again.