kimber slide stop problems

[redcliff]

It's either the slide stop's mag follower engagement surface isn't fitted right, or you're bumping it with your thumb, or the ammunition is out of spec.

While it may possibly be you, Kimbers are somewhat notorious for having slide stops out of spec; for a while they used 9mm slide stops on their .45acp models which caused a lot of these issues. I have an Ultra CDP II that went back to the factory twice for this issue but it's finally correct now.

[diginit]

Ok when I pull it back without the mag in doesn't stay locked up unless I move the slide lock upwards, with the mag in it (without rounds) it stays locked back. Aside from that it all seems pretty normal.

This IS normal function.

Don't file anything unless you want to void your factory warranty.
Don't fire +P unless you install a stronger mainspring Or your slide will end up with flattened stops. Your Kimber may or may not have a buffer. Depending on the model.

[corporateslave]

Take off the slide, put the slide stop back in, and put a loaded magazine into the frame. You should be able to see if the bullet is making contact with the inside of the slide stop. I had this issue with my kimber with multiple types of factory ammunition and mags.