Weird CM9 discovery

[Jabski]

Mine sits in my home made holster more than it fired the last few years, so I was bored today and decided to clean it.
I found where the guide rod sits on the barrel lug to be oddly misshapen. As in, if looking from the barrel end, the metal on the “ledge” is wavy.
Looking down from above where the rod should be sitting is the same.
It’s not like there’s rough burs or anything, just misshapen. Enough to where I’m wondering how much more wear before the rod would slip off.
It’s a 2019 pistol, so no warranty, but at some point I’ll maybe buy a new barrel just for that aspect of it…..
I don’t remember how to post pics or else I would have…..
I like my CM9, CW45, and K9. A lot! ( and all my previous Kahn’s) but the sloppy slide fit on my K9, and now this on a low mileage, non +P ammo pistol, it makes me wonder…..

[Bawanna]

You need 30 post to post pictures Jabski. I'd love to see some. You can post pictures from a outside source like tinypic or postimage etc. I'm not 100% certain exactly what your talking about.

[Jabski]

https://postimg.cc/gnzZNwvh
https://postimg.cc/zy3RY92X
thats supposed to be a nice straight shelf for the guide rod to sit on..

[getsome]

The barrel seats on the upper ridge, not the lower part…..If you seat the recoil spring too low the pistol won’t go back together so use that upper ledge to seat the spring on and all will be well…..Hope that helps

[Jabski]

Oh for crying out loud, I know how to assemble my pistols, but thanks for the comment. It might not be as obvious in a picture, but the whole point is the upper ridge is semi compromised by the metal being deformed. My concern is that at some point it will slide off of the upper ridge due to recoil.
‘The pictures don’t do it justice. If you were to look at it in person you’d see what I mean. Look closely at the left side if the shelf. It’s close to being gone…
This is not a high mileage pistol by any means. Had I shot the snot out of it, that ridge would be a whole lot worse.
So how does yours look?

[getsome]

Sorry man, I meant no disrespect, There is no way to know when something will fail so shoot it and if it ever fails or it just bothers you just send it back to the mother ship for an inspection and even if they charge for a repair you will be returned a gun you can trust…..

[Jabski]

Sorry man, I meant no disrespect, There is no way to know when something will fail so shoot it and if it ever fails or it just bothers you just send it back to the mother ship for an inspection and even if they charge for a repair you will be returned a gun you can trust…..
Thanks for that. That’s the thing with message boards, there’s no way to know someone’s level of expertise and you were merely offering advice. I over reacted a bit.
Yes, I could send it back to Kahr out of warranty to have them fix it. But really, I think they’d just replace the barrel, as there’s no other fix other than grinding a new ledge.
Heck, I could take machinists files and file a new ledge if need be, but that would be as a trial before replacing the barrel.
I’ll shoot it a bit and see if it looks any worse.
This thing has given me 0 problems and shoots like a dream; however, when I saw this problem, I also saw some peening on a few spots of the hood of the barrel that I chased lightly with a file.
Im just curious as to why this happened. I’ve never seen that before.

[Bawanna]

I would send those pictures to Kahr customer service. That had to be born that way and I wouldn't be surprised if they didn't replace that barrel. Warranty or not. It's happened before. May or may not in this case but that's a mfg defect.

[Jabski]

Well, it can’t hurt , that’s for sure. I’ll give it a whirl.
After them having my K9 and telling me that that rattletrap is within spec, I’m not very hopeful.
Im notorious for not seeing the forest for the trees. Your right, that was probably there all along. And the frame on my K9 didn’t just magically shrink to make a sloppy fit……
‘Having said all of this, neither one has given me a second of trouble, and this little CM shoots as nicely as the PM9 that I had..

[Bawanna]

I also doubt the condition would ever get worse and as long as it shoots well, even if they don't replace it, while I wouldn't like it much I think it would still be good for the long haul.

[gb6491]

Oh for crying out loud, I know how to assemble my pistols, but thanks for the comment. It might not be as obvious in a picture, but the whole point is the upper ridge is semi compromised by the metal being deformed. My concern is that at some point it will slide off of the upper ridge due to recoil.
‘The pictures don’t do it justice. If you were to look at it in person you’d see what I mean. Look closely at the left side if the shelf. It’s close to being gone…
This is not a high mileage pistol by any means. Had I shot the snot out of it, that ridge would be a whole lot worse.
So how does yours look?
If one considers that, once installed properly in the gun, the back of the guide rod is seated against the frame for it's intended operation, I see no reason to be concerned about that. You can verify this by putting just the barrel, slide stop and recoil spring assembly into the frame: moving the barrel to it's "locked and unlocked" positions will demonstrate that barrel lug is well out of contact with the end of the rod during operation.
Regards,
Greg

[jeepster09]

If one considers that, once installed properly in the gun, the back of the guide rod is seated against the frame for it's intended operation, I see no reason to be concerned about that. You can verify this by putting just the barrel, slide stop and recoil spring assembly into the frame: moving the barrel to it's "locked and unlocked" positions will demonstrate that barrel lug is well out of contact with the end of the rod during operation.
Regards,
Greg

Welcome back stranger! :amflag:

[BirdsThaWord]

Welcome back stranger! :amflag:
Agreed! Haven't seen hide nor hair from Greg in a bit.

[Bawanna]

I too was ready to send out a QRF for Greg. Awfully nice to hear from you.

[BirdsThaWord]

Jabski, take a look at vids (if you have not already) about how smith's tighten 1911 slides using a vice. Of course, easy does it. That's something I would try without qualms if a slide was loose to the point of bothering me.

[Jabski]

Jabski, take a look at vids (if you have not already) about how smith's tighten 1911 slides using a vice. Of course, easy does it. That's something I would try without qualms if a slide was loose to the point of bothering me.
Thanks. I do a lot of stuff myself and it’s funny you mention that.
a few days back I was looking at it thinking that gently squeezing the dust cover portion of the frame could probably tighten thing up.
Then I was thinking about how much I spent on this, and thought no, I can live with a sloppy fit. Especially since it’s given me no problems.
I just can’t see how this is supposed to be “ within specs”( according to Kahr). I have had a LOT of pistols in my life and not once had one like this…
Thanks for the tip though. Now I’m going to have to watch some of those videos anyway! Lol

[BirdsThaWord]

Thanks. I do a lot of stuff myself and it’s funny you mention that.
a few days back I was looking at it thinking that gently squeezing the dust cover portion of the frame could probably tighten thing up.
Then I was thinking about how much I spent on this, and thought no, I can live with a sloppy fit. Especially since it’s given me no problems.
I just can’t see how this is supposed to be “ within specs”( according to Kahr). I have had a LOT of pistols in my life and not once had one like this…
Thanks for the tip though. Now I’m going to have to watch some of those videos anyway! Lol
Cool man! If you do end up doing something to tighten it up please keep us updated. It's not something I've ever done. I had found some free Wilson Combat 1911 build videos somewhere (I'd post a link if I knew) where they tightened the slde. I've just never had the need. Good luck with CM9 as well :cool:

[dustnchips]

Been there done that with a Gold Cup slide. A big vice on a bolted down bench and a long pipe to tighten the vice. They are tough to bend. Got a great fit out of it though. I was scared all of the time I was doing it but did not over tighten or mar the blueing.

[dao]

You guys have more guts than I would. Gives me shivers just to think about it.

[Bawanna]

Agreed. I thought I had pretty big cojones taking a hacksaw to a corner of a few of my 1911's to make bobtails. There was a lot of finger crossing, some praying, and a little bit of drinking involved. I need more of all three to put the squeeze on in a vise, especially with a cheater bar. Me bonnets off to you lads.

[GROTMAN]

JUST IN CASE ANYONE NEEDS HELP WITH THE "COJONES "

https://www.ncgunowners.com/xf/attachments/growacet-ucem-ttfu-jpg.15013/

[BirdsThaWord]

Been there done that with a Gold Cup slide. A big vice on a bolted down bench and a long pipe to tighten the vice. They are tough to bend. Got a great fit out of it though. I was scared all of the time I was doing it but did not over tighten or mar the blueing.
Good to hear one of us amateurs can get it done. I’m sure it was a bit harrowing, given the value of that slide!

[BirdsThaWord]

JUST IN CASE ANYONE NEEDS HELP WITH THE "COJONES "

https://www.ncgunowners.com/xf/attachments/growacet-ucem-ttfu-jpg.15013/


19501

[dao]

^^^Yup, got me too :D

[dustnchips]

It didn't end with squeezing the slide. I peened the rails on the frame to take out the up and down motion. Then a bit of valve grinding compound to work the parts together again. An over under bushing to tighten up the barrel fit at the front. A different size link to help lock up better. The top tang of the barrel welded up and filed to fit the slide. Fortunately the trigger was great so I never touched it. I got the information out of a gunsmithing book I bought. Unfortunately Ilent the book to a friends son and never got it back and I don't remember the title or author.

[BirdsThaWord]

It didn't end with squeezing the slide. I peened the rails on the frame to take out the up and down motion. Then a bit of valve grinding compound to work the parts together again. An over under bushing to tighten up the barrel fit at the front. A different size link to help lock up better. The top tang of the barrel welded up and filed to fit the slide. Fortunately the trigger was great so I never touched it. I got the information out of a gunsmithing book I bought. Unfortunately Ilent the book to a friends son and never got it back and I don't remember the title or author.

Oh, well that's all you did? Lol! I should get me that book. If you learned how to do all of that from it, and it ran well after, then that's one heck of a good book. Kudos for taking all of that on.