CM9 Light Strikes: Update

[bapple]

I'm thinking they may need to check the striker and the striker spring. My CM9 absolutely obliterates primers, which is good but that's what it does. It hits primers harder than my Beretta 90 two, and Ruger SR9c. The only ones that hit harder are my SW1911 and DPMS AR15.

I've even run Tulammo through it before without a single problem. The stuff was really dirty, but my Kahr hit those rock-hard primers just fine.

Surprising to hear this issue...

Kahr will surely sort it out.

[JFootin]

Sounds like you could use the Wolff's 5 pound striker spring.

[SteveSS]

I only have 100 rounds through my new CM9 so far, so I'm well inside the break-in area and understand that it needs more lead down the pipe to form an opinion. That being said, I've had two light strikes in those first 100 rounds myself. All of them in the last 20 rounds with no prior cleaning. I've since cleaned it up really well and am waiting on my next trip to the range with my next 100 rounds. In my case, I think it was just dirty.

[hardscrabble]

I only have 100 rounds through my new CM9 so far, so I'm well inside the break-in area and understand that it needs more lead down the pipe to form an opinion. That being said, I've had two light strikes in those first 100 rounds myself. All of them in the last 20 rounds with no prior cleaning. I've since cleaned it up really well and am waiting on my next trip to the range with my next 100 rounds. In my case, I think it was just dirty.

See my original post. When I cleaned my pistol after the first 100 rounds (and first sign of trouble) I removed the striker/spring/plastic guide from the slide and cleaned it completely of any lube/residue. I wanted to run the next rounds through with the striker and channel completely dry.

That 100 rounds had not contributed any fouling to the striker channel. I won't say it was perfectly clean, but there wasn't enough fouling or excess lube in there to be the cause of the trouble.

The pistol was rcvd by CS at Kahr on Tuesday. I'll update when I have some new information.

[CarlCyrus]

My brother has two Kahrs...an MK40 and a PM9. I have a MK9 and a PM9. Three of the four guns run great. His PM9 is having light-strike problems. He had swapped mags and ammo. Seems to be one tell-tale sign of the problem. All of his primer indents are slightly off-center.

Methinks that the barrel is not fully locked up so that the center of the chamber is in line with the center of the firing pin. Other option is that the firing pin is not properly placed in the slide (too low, or too high). Regardless, I told him to write Karh and get a return number...let them sort it out.

Carl

[jocko]

light strikes are also caused by an out of spec trigger bar. let kahr sort it out, . is a good idea..u do what u can at home without harming the gun andif it doesn't make it well, then let kahr have it..they have the ability to replace parts and test and then replace more parts and test,l WE DO NOT.

[hardscrabble]

TTT for the update.

[hardscrabble]

Tested after it got back from the factory: 350 rounds fired, all clean. Whatever was wrong, the slide replacement fixed it.

[Snidely Whiplash]

Good news, indeed! Thanks for the report.

[gb6491]

Good news, indeed! Thanks for the report.

+1

[warbird1]

I'm glad I read this thread. Same problem I am having. Now I know the best course of action. Thanks hardscrabble.

[Gliderguy]

If the trigger bar or striker block was out of spec the striker could have been falling a tad early partially catching on the striker block (that wasnt fully retracted) enough to slow it down and not get a solid hit on the primer, or if the slide striker channel wasn't milled down deep enough, yada, yada, yada, there are a few things that have to happen exactly right for it to go bang, but once they are right they shouldn't "drift" out of sync the way the Kahr is designed.

I learned this the hard way when I tried to modify the trigger bar on an LCP to very slightly decrease the trigger stroke where it wasnt a CH off the back of the trigger guard when it went bang. Hammer dropped early as I wanted, and the not fully clear hammer block caught it every time, reliably. I was able to un-modify my mod and all is well again. Makes me leary of letting that sear area run dry, wouldn't take crazy amounts of wear on the trigger bar to cause the same problem. Again, the way the striker fired Kahr is built, it would take a good bit more wear to throw it out of sync in a similar fashion.

[davec]

I bought my CM9 mid 2016 and am coming up on 2000 rounds. It would fail to fire 1 out of every 200 or so using Remington white box. Lately is doesn't fire 1 or 2 out of every mag. No dent on the primer, put the round in again and it fires. Going to the range tomorrow with several types of ammo to see what happens. I hate to send it back but also can't own a gun I have no faith in.