Posted: 8/8/2021 8:09:43 PM EDT
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Installed a new recoil spring assembly (ordered from kahr) for my PM9 and noticed 2 things: - Its now much harder to rack the slide - I can no longer lock the slide back using the slide lock lever. It seems that the slide won't quite go back far enough to engage it. If i insert an empty mag to hold the lever up and then forcefully slam the slide back until it feels like it "bottoms out" on something, the slide will lock. If I drop the empty mag, I cant slingshot the slide back into battery. There's just no more rearward travel in the slide when its locked back. If I pop the old spring back in everything operates normally. Anyone ever heard of this? I haven't shot it with the new spring yet, so hoping it loosens up after a few mags. |
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Originally Posted By RolandTommyGun: Installed a new recoil spring assembly (ordered from kahr) for my PM9 and noticed 2 things: - Its now much harder to rack the slide - I can no longer lock the slide back using the slide lock lever. It seems that the slide won't quite go back far enough to engage it. If i insert an empty mag to hold the lever up and then forcefully slam the slide back until it feels like it "bottoms out" on something, the slide will lock. If I drop the empty mag, I cant slingshot the slide back into battery. There's just no more rearward travel in the slide when its locked back. If I pop the old spring back in everything operates normally. Anyone ever heard of this? I haven't shot it with the new spring yet, so hoping it loosens up after a few mags. Not to be rude, but are you sure you installed it right? Sounds like it is not.. a few extra pounds of recoil spring, correctly installed will not cause what you are describing. Not having the guide rod or spring correct would however. |
Thanks for the replies. Here's the old spring on the left and new one on right. The old one is more compressed, as would be expected. But also it looks like the new spring has 1-2 more coils than the old one. Maybe they did send the wrong spring. 
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Well I cut the recoil spring down to match the number of coils on the old one. Finally got to the range to test it and everything seems fine. Did some reading on KahrTalk forums and this isn't the first time the wrong spring was sent out. Thanks for the help fellas. |
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I recently went through this with Kahr. Had to send my pistol to Kahr. There are 3 distinct and separate separate generations of recoil spring assemblies for the PM9. Based upon my serial number my PM9 should use a 3rd generation Spring however it, however it actually uses a second generation recoil spring assy. You can look up descriptions of the springs in the kahr shop. my PM9 runs like a top now. |