I got .005 tight, on this reolacement gun, need to break in and see if it peens or whatever, so far it has shot 15 rnds perfectly, thanks StanOn those "good" PF-9s I have been able to measure, I found the "gap" to be .003-005. On the one "peened" PF-9 I measured, it was considerably in excess of .006 (peening prevented an accurate measurement at the time).
Jim R