I was thinking that the M8 was a .40. cal, but yours is 9mm, brain fart, got it the M8 is next generation PSP.
BTW, there are 2 models of PSP.
I like the late model PSP better than the P13, the psp was one of those used police pistol and the trigger is like a match gun
I find that the P13 is not as smooth, but it would have less round thou it.
The M10 mags work great in the model 13, 13 rds 9mm
I have been trying to talkmyself in ordering Nill gripscostly, but if you shoot this stuff, cost should not be a factor,
but i am a cheap old fart.
This would be the perfect carry gun
I shoot 4 mags of ammo rapid fire, one time, smoke coming off the frame, everything fine after it cooled off, not a great idea.
I have sold some of these and always wonder why the hell I did that later.
Marshall in Sk.