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Mike Brownhouse
01-18-2013, 03:08 PM
Just picked up a new CM40, I'm very happy with it so far. I've wanted a Kahr for a long time, the first .40 S&W I fired was a K40. I had been thinking about an MK40, but couldn't find one. The CM40 was handy and the price was right, so I went with it. Here are some of my experiences with it up to this point. The first thing I did was take it apart and clean it. It needed it. It was lubed heavily, and it was also dirty inside. Lots of polymer shavings, along with some small metal shavings, including one that was an inch long from along the pickup rail. I think a better job could have been done at the factory to clean up polymer flash at the machining points, but I'm extra-picky about stuff like this.

It was extremely tight to begin with, as expected. The slide stop was difficult to operate or remove, and the mag release required an extra long push to release, which could only be accomplished by rotating the gun 90 degrees to the left and using the tip of the thumb. The slide took a great deal of effort to operate, much more than other larger .40s that I have fired. Some of this was due to the fact that it was new, and some due to the fact that this is a tiny .40. I operated the slide about 200 times prior to firing, to loosen it up a bit.

On my first trip to the range with it, I put about 75 rounds through it. It is definitely a snappy gun, but not uncontrollable or the least bit uncomfortable. Having fired a Glock 23 extensively, I'd say that the CM40 is a bit harder to control in follow-up shots, but more comfortable to fire. My first attempt at rapid fire destroyed the target holder on the second shot, but practice should improve this. Firing more deliberately, I was actually very surprised by it's accuracy. At 21' I was able to manage groups well under 2", and at 50', excepting for the occasional flier, I was able to get some sub-4" groups. I had no failures of any kind, except for a broken mag follower after about 20 rounds. Kahr is sending replacements, they indicated that this would improve after break-in, but others here have talked about modifying the feed ramp. I'll get through break-in, read a little more, and then decide what to do. Other than this, the range trip was uneventful.

Cleaned it up after shooting, nothing unusual for a new gun. It has begun to loosen up a bit now. The slide is a little easier to operate, the slide stop can be released manually with an empty magazine installed, the mag release can now be operated with the side of the thumb as it's supposed to be, and the empty magazine drops free without any hang-up.

It took me a while to finally get a Kahr, but it was worth the wait. I'm very happy with the CM40.

jocko
01-18-2013, 04:12 PM
we have some super sticky's on this forum top help u.

#1 kahr lube cvhart

#2 propper prepping of ur kahr gives u some tips to look at.

Kahr as u know ask for 200 rounds before getting to excited.

The slide stop will certainly get better with time to. EVERYTHING gets better with rounds down range. Normally after 2 to 500 rounds down range u will think u got a different gun. Kahrs are tight, they really IMO never loosen up, they smooth up but never get sloppy. they are what they are.

Indeed the 40 cal is a real pisser to shoot in most poly kahrs, basically ur holding a 14 ounce gun i ur hand and shooting one of the hottest rounds out there. Sounds to me though the gun did what it should and now u will justy get better with it , with more rounds to.

I would not recommend doing anything to the feed ramp, replce the follower and shoot it some more, if by chance it does it again, I wuld call kahr and talk to Jay and state ur two times it has happened. Let them on their dime pick up the gun and do the feed ramp mod. If u do it and screw it up, u screw up ur warranty. MOre than likely with more rounds this will cure itself. Some things I and utters here can tell you to do in house but modifying a barrel feed ramp IMO is sumpin the factory should address. they made it, let them if needed fix it right.

Mike Brownhouse
01-18-2013, 04:56 PM
Good advice, thanks Jocko. I did already read a number of the stickies, including the new Kahr setup and lube chart. Very informative.

My impression is that, in just 75 rounds, it went from being TIGHT to being much nicer. Not looser, but smoother like you said. I figured this would be the case. I will definitely be completing a thorough break-in before I get concerned about anything. Considering what we're talking about, which is a really small .40 that's intended to be completely reliable, the initial tightness and required break-in seem entirely reasonable to me.

The feed ramp/mag follower issue is curious to me, I'm not entirely clear on how it will improve post-break-in, but I have faith that it will be resolved one way or the other. To hold and operate the gun is to understand that it's a fairly impressive engineering feat, so whether it cures itself or needs a minor adjustment, I'm not worried. And as far as I can tell, it's nothing more than an annoyance, it hasn't affected operation or reliability in any way.

It has me wondering too, what would the harm be in clearancing the follower itself, rather than the ramp? The point of contact on the follower could be sanded down ever so slightly without affecting mag operation, and it could potentially fix the problem without ever touching any metal... I might look at this when I get my new followers.

jocko
01-18-2013, 05:49 PM
well one thing is this. the worst u can do is ruin a follower and then u just buy anutter one.. the best thing u can do is u fixed the issue. It isn't much of the feed ramp that is hititng the follower eithger, as some have sent theirs back and when they get um back they realy can't see what was done. So inded when u get the follower, studiy it, see if it is possable to do what u want and be OK. the idea sounds reasonable, just not sure if it can be modded enogh to work, but again nutting ventured, nuttin gained..

JrFreak
01-21-2013, 12:32 PM
What's the main differences between the CM and PM models? Just the barrel? And price?

JrFreak
01-21-2013, 12:42 PM
Ok. After doing some searching on the phone I found this.

http://www.gunsamerica.com/blog/the-kahr-cm-9/

Mike Brownhouse
01-22-2013, 01:36 AM
Had the CM40 out again today, it continues to impress. I had one FTF, after the very first shot, which was probably a limp wrist. All 49 other shots were flawless. (125 rounds total, still breaking it in, 1 FTF which was my fault) This is as accurate a pocket gun as exists. I had one target at 21' with one big hole and one small hole about an inch and a half away. As I get accustomed to .40 in such a small, light package, follow-up shots are coming much easier. I'm also either getting used to the recoil, or the Federals I shot today are a slightly lighter load. The feel with these was reminiscent of a Glock 23 I remember, with ever-so-slightly more muzzle flip. I was able to semi-rapid-fire six rounds and keep all on-target this time. I have nothing but good things to say about the CM40. Quality, reliability, size/weight, price, stopping-power, it pretty much has it all. If you're thinking about one, I would heartily recommend it.

Glock23
01-22-2013, 07:35 AM
Had the CM40 out again today, it continues to impress. I had one FTF, after the very first shot, which was probably a limp wrist. All 49 other shots were flawless. (125 rounds total, still breaking it in, 1 FTF which was my fault) This is as accurate a pocket gun as exists. I had one target at 21' with one big hole and one small hole about an inch and a half away. As I get accustomed to .40 in such a small, light package, follow-up shots are coming much easier. I'm also either getting used to the recoil, or the Federals I shot today are a slightly lighter load. The feel with these was reminiscent of a Glock 23 I remember, with ever-so-slightly more muzzle flip. I was able to semi-rapid-fire six rounds and keep all on-target this time. I have nothing but good things to say about the CM40. Quality, reliability, size/weight, price, stopping-power, it pretty much has it all. If you're thinking about one, I would heartily recommend it.

I'm picking mine up after work today, assuming it arrived at my ffl on time. Can't wait to take it to the range this weekend!

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