CM9 Trijicon front sight sheared off

[Ressom]

Well after about 1300 rounds the front sight of my CM9 sheared off while firing. I recall reading this happening to another here (to Russ?). This is the front Trijicon night sight that Kahr sold on their website for $30. It doesn't look like they are selling them anymore (maybe a good thing?). I installed this with red loc-tite last August. It looks to have scheared both the back post and the screw. (Attached are pictures.)

I emailed Kahr support and they will have nothing to do with it since they did not install it. I can understand that. But they wouldn't even send a replacement plastic sight. So I managed to salvage the previous plastic sight and install that until I figure out what to put on next.

The kicker is I was pumping this gun up to a friend looking for a CC firearm that was shooting with me as having zero malfunctions. HA HA... Murphy's Law!:o

[BEARDOG]

That is poor CS IMO. They sell and promote this product on THEIR website. Then won't stand behind it. That's poor enough... But then they go the extra mile to really show how POOR the CS is by not even friggin sending you a cheap stock plastic replacement front sight so that you can actually aim the weapon THEY made!!! Unbelievable.

[JFootin]

Did you try Trijicon CS? Or whoever installed the sight?

[MLESa7990]

That is poor CS IMO. They sell and promote this product on THEIR website. Then won't stand behind it. That's poor enough... But then they go the extra mile to really show how POOR the CS is by not even friggin sending you a cheap stock plastic replacement front sight so that you can actually aim the weapon THEY made!!! Unbelievable.


I agree with you regarding the plastic sight. Seems it would have been easy enough to send out a replacement.

But why would they warrant a sight that broke off when they were not the ones that installed it? Then again, you did state that was just in your opinion.

OP, if I were you, I'd contact the manufacturer of the sight.

[BEARDOG]

I agree with you regarding the plastic sight. Seems it would have been easy enough to send out a replacement.

But why would they warrant a sight that broke off when they were not the ones that installed it? Then again, you did state that was just in your opinion.

OP, if I were you, I'd contact the manufacturer of the sight.

You really think he installed the sight wrong? 6 mths and 1300 rds later??? Don't you think it would have failed much sooner if somehow he managed to mess up putting a drop of loctite on a screw and turning it into a hole.
It is not really rocket science.

These sights are only available through Kahr as far as I know. I wonder if Trijicon actually makes the metal part that is breaking? Trijicon lamps are in a few different Co sights, my XS Big dots are stamped Trijicon too.

I would still contact Trijicon and see what they have to say about though. But If they won't stand behind it either, and you want a front night sight, then I would go with the Dawson Precision version with the two flared posts instead of another one of these. I never heard any negative reports on those type. Good luck!

[MLESa7990]

I don't understand how a metal sight sheers off from normal use.

Fall off maybe,but sheer?

I'm curious as to what exactly happened.

[Ressom]

I installed the sight myself. Like Beardog said... it's not rocket science. I used red-loctite and let it cure. You can see in the picutre that the screw loosening isn't what failed. The screw was still in the sight post and both the post and screw sheared off. That says to me that the post and screw couldn't handle the stress. I had to use a punch to get the screw and the post out since turing the screw was just turning the post in the slide sight hole.

I didn't think of contacting Trijicon... I will do that. But I am not expecting much because I don't believe they have a replacement sight for the CM9.

I'm thinking of maybe just sticking with the plastic sight. I don't believe there has been any posted failures of it, right?

[Ressom]

What exactly happended was my buddy and I were dueling on my dueling tree. He had a 9mm XDm with 19 round magazines. I had a CM9 with 6 round magazines. After about 2 or 3 shots my front sight was gone. I paused and looked at the missing sight and he continued to shoot. I then continued to shoot the rest of the magazine, but couldn't hit anything. So I gave up and he won. That was the only time he beat me that day. :)

[MLESa7990]

I'm thinking of maybe just sticking with the plastic sight. I don't believe there has been any posted failures of it, right?

On the contrary...those are the ones that are usually reported as breaking since they are plastic. That is why I was curious how the metal night sight broke off like that.

[Tinman507]

Was it damaged in your holster and finally fell out while shooting?
I sometimes wonder if my front sight doesn't take a bit of abuse within the holster or even from drawing it? Unless the screw head protruded I can't see how shooting would cause it to fall off.

[JFootin]

Frankly, I never worry about my front sight.

http://i1230.photobucket.com/albums/ee486/John_England/Misc/alfred_e_neuman_001.jpg

[Ressom]

Was it damaged in your holster and finally fell out while shooting?
I sometimes wonder if my front sight doesn't take a bit of abuse within the holster or even from drawing it? Unless the screw head protruded I can't see how shooting would cause it to fall off.

The screw head definitely did not protrude.

I did get a new kydex holster a couple of weeks ago. I looked to make sure there was clearance for the front sight... in the muzzle end of the holster it is ok. But I guess it is possible that the sight rubbed against the rim/opening while unholstering or reholstering. (I mean I could force it to rub if I was trying to do it deliberately.) And then maybe the firing knocked it off completely.

[kb2wji]

I'm gonna bring this thread back to life. My front dot sight just sheared off of my K9. It's obnoxious. I'm debating going to a night sight. I'll probably give Kahr a call to see if they show me any love on a replacement, although I dont have my hopes up.

[Tinman507]

Sheared off a K9?????

How the hell did that happen?
CM9's are pinned in so they're more prone to shearing
K9's are dovetailed in. You gotta be crazy rough to do any damage

[jocko]

I'm gonna bring this thread back to life. My front dot sight just sheared off of my K9. It's obnoxious. I'm debating going to a night sight. I'll probably give Kahr a call to see if they show me any love on a replacement, although I dont have my hopes up.

be bestif u could send them a photo of that sheared front sight. They might then do sumnpin but u would have to pay to send the slide back to them, certainly don't send the entire gun as that would break the bank U could send the slide back regular mail for about 8 bucks.If kahr offers to replace the sight and do the service on it, I would let them do it. Sometimes those dovetails sites on kahrs are a real b!tch to get off...

[wyntrout]

For a DIY install there are just too many variables... over-torqued screw... under-torqued screw... too much or too little thread-locker... enough protrusion for battering to loosen the screw and so on. Neither Kahr nor the sight manufacturer had anything to do with the installation... so they are not responsible. Maybe it was a defective screw... weak metal... who knows. There are two openings for residual gas pressure in firing to "work" on loosening the screw or wiggling the whole sight... plus the recoil and residual BLAST. It's there... I've gotten many still frames with flashes coming out of even parts of the pistol to rear of the chamber, let alone the front where the muzzle as it's doing its thing... unlocking and pivoting as the slide goes back!

IF I were going to have to install one of these "C" model sights, I would use epoxy on the danged alignment pin and RED threadblocker on the screw... and make damned sure that there was NOTHING that was going to be hit by the barrel and it's motion. There are a lot of forces at work in that area of the slide. Even if you take all of those precautions, you could have failures... just not as good a mount as the properly dovetailed sights.

My newest P380's rear sight came loose after a few trips to the range and ONE to the factory. I cleaned out the dovetail and used red Permatex to hold it in place. The sight should have been a tight fit without any adhesive... certainly not loose without adhesive!

Wynn:)

[kb2wji]

Sheared off a K9?????

How the hell did that happen?
CM9's are pinned in so they're more prone to shearing
K9's are dovetailed in. You gotta be crazy rough to do any damage


I was shooting with a buddy of mine. I was at an indoor range shooting very slow fire. I had already shot 100ish rounds that day. I put a new magazine in. I send off two or three rounds no problem. Then, as i'm looking for my front sight, its not there :eek: I never could find it. It simply came off during slow, controlled fire.

It did shear off. It's not pinned. It's pretty weird how it broke. The metal almost looks porous...obviously not great quality. I'm on vacation now but i'll try to post a picture in the next day or two. Till then, the PM9 takes over as primary carry. :D

[Tinman507]

Hell, bite the bullet and put a Big Dot on it.
That had to be either defective or dropped.
Never heard of such a thing.

[kb2wji]

Update!

Kahr customer service rocks. I mailed them the slide out, and had my slide back with a new front sight in about two weeks. Dont owe a dime.

Makes me really want to add the K45 to my collection....oh, wait...

[wyntrout]

Very good! Congrats on your perseverance.

A K45 would be my dream Kahr... been one since I first heard of Kahr back in the mid-90's. I got my K9 around March '98, but don't CC it. I've been focusing on the polymers for CC. I still plan to add a P45 one of these days.

One of my other wishes is to get the Trijicon Hard Duty Night Sights on some of my Kahrs. They have great features and help with my aging eyes... though they don't help my various bad habits with trigger pull!:rolleyes:

I'm thinking of getting the ones for the 1911 and having them installed... doing whatever it takes... at a local custom gunsmith shop. My P40 still has those dot and post things... and my P9 could use re-lamping of the 8+ year-old Novak Trijicons.

Wynn:)