25th Anniversary K9
25th Anniversary K9

Announcement

Collapse
No announcement yet.

PM9 and accurate caliper request!

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • PM9 and accurate caliper request!

    The slide stop on my latest PM9 - the one that replaced the stolen one - is giving me fits of angst.

    Whilst firing, it performs splendidly .

    However, during the act of hand racking... I've found the nub that projects forth from the right side of the receiver appears to be subject to inadvertant pressing. The result being that the slide stop walks leftward, and the slide then locks, as the engaging surface on the slide stop interacts with the corresponding cut in the slide.

    I've already thinned mine.

    I cannot say how long the pin was to begin with.

    Currently, its 1.086 inches and seems to stick out more than I remember the slide stop on my old PM9j or on either of my PM45's.

    I think I may have removed a good .015 or so already!

    Can someone please, have mercy, and use an accurate caliper to meaure the total length of the pin from face of slide stop lever to its opposite side?

    Many thanks in advance!

  • #2
    Originally posted by CJB View Post
    The slide stop on my latest PM9 - the one that replaced the stolen one - is giving me fits of angst.

    Who would STEAL a Kahr slide stop? That stopped the thread for me right there.

    Oh, must've been a stolen PM9 gun....sorry...ggggeeeessshhhh...

    Comment


    • #3
      Might be talking about a stolen PM9, and the current slide stop on his replacement needs fixin maybe?
      23 years in a Federal Penitentiary, 6x8 double bunked rooms with toilets
      sigpic

      Comment


      • #4
        I believe the PM9 and CM9 slide stops are interchangeable.

        My CM9 slide stop pin is 1.1205, using my reloading calipers. (Center of the pin to the flat side)
        All that is necessary for the triumph of evil is that good men do nothing.

        USAF (Ret)
        NRA Life Member
        Conservative

        Comment


        • #5
          Yikes... that seems wide. I was thinking about taking another .020ish off mine, so it sticks out just barely past the edge of the slide on the right side.


          Hey I got my grammar lesson's from "The Jocko Instutit of Comminucation", so I'm very happy to be a good comminucator.

          Comment


          • #6
            A long time ago someone who had excellent writing skills said to me: "Ask yourself 'what is it that I want to say?' Then, when you know what it is that you want to say, you are more likely to write it accurately and without ambiguity".
            Last edited by kahrinca; 08-31-2015, 03:50 PM.

            Comment


            • #7
              Let me ask again then...

              Just how long is the PM9's slide stop pin supposed to be?

              In decimal inches please, to the nearest .002 is fine...!~

              Comment


              • #8
                My CM9 is-

                1.114" OAL (outside of lever to tip of pin) ( I believe the CM lever is a little thicker then the PM's)

                So maybe these will help more.

                .975" Pin only length (from inside surface of lever to tip of pin)
                .075" Amount of pin protrusion from frame on right side, assembled

                I had to increase the spring pressure on my CM9 slide stop when it was new to stop the pin from walking out.

                Comment


                • #9
                  The slide stop spring also serves to hold the slide stop in place. The spring wire fits into the groove in the slide stop. The O.A.L. of the slide stop shouldn't have any bearing on pin retention. I'd look into adjusting the slide stop spring. Caution the screw that retains the slide stop spring threads into polymer. Do not over tighten.
                  Never trust anyone who doesn't trust you to own a gun.

                  Life Member - NRA
                  Colt Gold Cup 70 series
                  Colt Woodsman
                  Ruger Mark III .22-45
                  Kahr CM9
                  Kahr P380

                  Comment


                  • #10
                    Yah Muggs... I know. I'm getting a good positive click when the slide stop goes home, its just that somehow, when racking, if I'm not careful, my fingers hit the other side of the pin, and it's just enough to get the slight caught up.

                    If I'm careful... then I avoid the pin and it racks ok. And it stays put during shooting.

                    Comment


                    • #11
                      He'll have to confirm but didn't Jocko actually recess his pin so it isn't even flush?

                      I'm with Muggsy, I don't see whey you couldn't make it near flush. I'd leave just enough to be able to push with a screwdriver handle or something for disassembly. I assume Jocko has to use a punch or something.
                      http://bawanna45.wix.com/bawannas-grip-emporium#!
                      In Memory of Paul "Dietrich" Stines.
                      Dad: Say something nice to your cousin Shirley
                      Dietrich: For a fat girl you sure don't sweat much.
                      Cue sound of Head slap.

                      RIP Muggsy & TMan

                      Comment


                      • #12
                        Wow, be careful, Colonel. Those nipples are supposed to protrude other side and facilitate lock-up and that gun does not fall apart.

                        But what do I know? I'm a relative newbie compared to y'all!

                        Comment


                        • #13
                          Ok, here's some comparison:

                          PM9 - protrusion past frame about .063
                          PM9 - protrusion past slide about .048

                          PM45 - protrusion past frame about .040
                          PM45 - protrusion past slide about .015

                          PM9 - WOA about 1.086
                          PM45 - WOA about 1.166

                          PM9 - Frame width at pin hole .890
                          PM45 - Frame width at pin hole .966

                          Dunno exactly what to make of those numbers.

                          I was wondering... if they got the wrong pin on the PM9's slide stop, but since others are longer than mine.... probably not.

                          Compared slide stop springs PM9 vs PM45... the PM45 is much looser, yet works perfectly.

                          I guess I'll just shorten the pin a little more and be done with it.

                          Comment


                          • #14
                            Can't see anything wrong with grinding it down flush with the right side. Only time you would need it was to remove it and folks have been removing it from Keltecs for a while and that one doesn't even reach the other side. Question now is how flat can we grind down the lever on the left side?

                            Comment


                            • #15
                              I ground the heck out of my PM45 lever, Wynn accused me of taking away it's manhood. I'll have to find a picture.

                              CJB, maybe we should remove the offending finger rather than butcher the pin any further.

                              Oh that's probably a stupid idea, what with the mess and all.
                              http://bawanna45.wix.com/bawannas-grip-emporium#!
                              In Memory of Paul "Dietrich" Stines.
                              Dad: Say something nice to your cousin Shirley
                              Dietrich: For a fat girl you sure don't sweat much.
                              Cue sound of Head slap.

                              RIP Muggsy & TMan

                              Comment

                              Working...
                              X