Recoil Spring Guide Nut Missing

[Captrigney]

While cleaning my cm9 after 150 rounds at the range I noticed the nut at the end of the recoil spring guide is missing. I'll be contacting Kahr but I was just wondering if anyone has had this issue. Also, will it be functional without the part?

Note to self: Clean gun after every range visit if just to inspect for damage.

How it should be:


http://s3-us-west-2.amazonaws.com/thebangswitch/wp-content/uploads/2013/07/AB3A2989-1024x682.jpg

How it is:
https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcQi2ElBkdVlkRb0u3XIccUV1xo6WM_H5 7K1ARplZ7Q90sTnP0-lUA

[wyntrout]

Email Kahr customer service with a picture and maybe they'll send you a new recoil spring assembly. I used to say they would... got one that way... but not so sure. It won't hurt to ask ,though. That's supposed to be a permanent union... the nut and the guide rod... and sold as a unit. They usually will replace the RSA when the nut departs.

Wynn :)

[OldFatGuy]

Why did it stick out like that? Mine is flush.

[Captrigney]

Why did it stick out like that? Mine is flush.

That's not my gun. I don't have enough posts to upload photos from my computer, so I had to look online for one. The owner of this gun was complaining about the nut catching on the slide and not going into battery.

[jocko]

That's not my gun. I don't have enough posts to upload photos from my computer, so I had to look online for one. The owner of this gun was complaining about the nut catching on the slide and not going into battery.

that owner is full of sheep sh!t. If installed properly,IT WILLNOT DO THAT- Period. course its always the guns fault. I now call these b.s statements by owners the TOM BRADY SYNDROME..

[jocko]

Why did it stick out like that? Mine is flush.

cause it was not installed corfrectly...

[kenemoore]

I had the same thing happen with a brand new PM45, 2nd range trip, noticed the nut missing when I got home. I called Kahr, explained what happened, they sent me an entire new assembly, took about one week from phone call to mail box.

See my post below:

http://www.kahrtalk.com/showthread.php?25127-PM45-Recoil-assembly-end-came-off&highlight=recoil+assembly

[jocko]

that nut is supposed to be locktited in but if u wanna be sure just buy the green locktite and that stuff u just put on the nut while it is installed and it will penetrate the thread s and be there FOREVER. Never a need need totake that nut off, if u gotta rplece just replace the outter sping and ur good to go..

[Bawanna]

I just check mine from time to time to see if it looks like it's coming loose. I figure if it ever comes off and I get a new one I'll spot weld that puppy.

I think maybe now and then one slips through missing the loctite or perhaps not tightened well enough. Seems they fly off early in life or they never fly off.

And they do seem to work just fine even with the cap gone, so I'm not terrible concerned about that failure when I meet the elephant face to face.

[Captrigney]

Thanks all. A new one's in the mail from Kahr. I'll give it the jocko treatment.

[AnthonyC]

I found that my CM9 guide rod did this as well, it would catch on the front of the slide, until I watched this video:


https://www.youtube.com/watch?v=73J64X1WhuY


By ensuring that the tip of the spring is pointed towards the barrel when I reassemble my pistol the guide rod cap never catches.

I had posted this tip several months ago when I discovered it. It seems like a lot of others had as well.

Good luck!

[SGT5711]

I've only had a chance to shoot my new PM9 twice now, and I actually prefer the guide rod assembly in the PM9. Of course it is different from the plain guide rod and spring in my K9 and P380. Does anyone know why the guide rod assembly is different in the PM/CM's from the other Kahr guns? I know the gen 4 Glocks use a similar style guide rod assembly as the CM/PM series.

[wyntrout]

Evidently the compressed/captured spring and the free one give better results that the single spring. Look at the P380 spring assembly... two concentric springs... one within the other... about a guide rod.

[SGT5711]

Evidently the compressed/captured spring and the free one give better results that the single spring. Look at the P380 spring assembly... two concentric springs... one within the other... about a guide rod.

That makes sense, just curious why they haven't made that change with the other pistols. Has the PM/CM series always had the different guide rod assembly?

[wyntrout]

As far as I know. The P/CW and larger have the traditional spring and guide rod, but Kahr had to do something different for the smaller pistols with shorter slides and less mass.

Wynn

[jocko]

seems like the smll framed guns hve sonme type of captive guide rod. My 43 glock has a captive guide rod assembly. Looks like an abortion but it works fine. nO REPLACING THE OUTTER SPRING ON THE g43 SETUP..

COURSE ANY DAMN FO KNOWS THAT A GLOCK RECOIL ASSEMBY IS GOD FOR 500,000 ROUNDS, THEN U JUST NEED TO RE-OIL IT AND CONTINUE.

[Alfonse]

COURSE ANY DAMN FO KNOWS THAT A GLOCK RECOIL ASSEMBY IS GOD FOR 500,000 ROUNDS, THEN U JUST NEED TO RE-OIL IT AND CONTINUE.

There are recoil reduction systems for larger framed pistols that replace a single spring with a captured system like the small Kahrs (PM, CM, MK) use. Having two springs allows the designer to use two different spring rates. The recoil pulse can be controlled a bit more that way. I'm just speculating but they may have a lower rated spring that allows the slide to come back far enough for even relatively weak ammo. But, after that there isn't much more room in the micro pistols to absorb recoil so a stiff spring after that allows the pistol to still function with hotter loads without beating itself, and the shooter too badly.

I imagine in these small pistols, without as much travel, the designers needed more control over the slide in the recoil pulse than they could get with one spring.

Here is an example for one of those Glocks that Jocko has taken a liking too. http://www.zahal.org/products/recoil-reduction-system-for-glock?path_parent=153401

Plus, I have found no evidence to the rumor that more Glock owners ride Hondas. Just saying.

[SGT5711]

As far as I know. The P/CW and larger have the traditional spring and guide rod, but Kahr had to do something different for the smaller pistols with shorter slides and less mass.

Wynn

Wynn, I'm just picking your brain here, but I wonder why they don't have the same style guide rod assembly for the P380 then.

[wyntrout]

Slim pickings... maybe that was the best recoil system Kahr could come up with in testing that tiny P380... and simpler and cheaper than the captive spring combo.

Wynn :)

[SGT5711]

Slim pickings... maybe that was the best recoil system Kahr could come up with in testing that tiny P380... and simpler and cheaper than the captive spring combo.

Wynn :)

Ha. Yeah the simplest explanation is usually the best answer. Thanks for entertaining my questions.

[Bawanna]

It could be the 380 doesn't generate enough energy to address the need for the bottom end of the captive spring setup (light loads) and they only have to address the high end to take care of the "Hot Rounds".

Just a scientific wild arse guess.

[Captrigney]

Just a followup: Received the new recoil spring assembly from Kahr yesterday. Less than 2 weeks from notification to delivery. Decent customer service, I'd say. Now gotta get some Locktite.

[muggsy]

If I were you and I'm not, I'd try to remove that nut before buying the Locktite. If it has Locktite you're not going to get it off or need more Locktite. Just sayin.

[kenemoore]

Have to agree with vacation man, it's the loose ones that go bye-bye

[Bawanna]

A person could put a small witness mark on the guide rod and nut to visually see if the nut ever turns, remembering of course that it is on the business end and due caution would be highly recommended.

One could also easily stake that nut on too. Probably neither is necessary. As Muggs so eloquently stated, if it was loctited before it left, it ain't going no where.

[pocket pistol]

This happened to my CM9 today. I hadn't heard of anyone else's doing that. I came home and did a search. Mine fit flush and when I left the house all was well. I went to the range and ran about 6 mags through her and when I came home and took it down for cleaning the nut had gone bye bye. I emailed Kahr. We will see what happens.

[pocket pistol]

Talk about Excellent Customer Service. I got an Email back from Kahr Monday. And got a new guide rod Friday. I am happy. Put it in my little pistol and I'll be hitting up the range tomorrow.

[2sBlind]

Hi Guys,

Just noticed the same thing has happened to my new PM9. I'll be giving Kahr a call Monday and hopefully they'll send me a new assembly with no fuss, but I just want to make sure: this missing end cap will not affect performance correct? (i.e., only for aesthetic purposes?)?

Thanks!

[AnthonyC]

This happened to mine a couple of years ago and my CM9 was still functional. Kahr did send me a new recoil spring assembly free of charge.