cm9 recoil spring position

[Baklash]

Some time ago there was a thread about the proper position of the cm9 recoil spring and it was not about the closed end needing to be against the flange. It was something about the open end position. I believe some people had reassembly problems and the solution was the open end needed to be turned up to the 12 o'clock position or something like that. I can't find the thread, but I'm sure the gurus here will know what I'm talking about. Or am I just dreaming?:confused:

[zamboni]

I know what you are talking about, but I thought it was 6 o'clock. I don't worry about it. I just put it in and if the spring end comes out I adjust and try it again. Once assembled I have never never had it come out so I think you are good to go if it doesn't stick out during reassembly.

[deadeye]

12:00 position is what the post said. I always do it and it works.

[Redstate]

Excuse my ignorance; but, what is the purpose of the described placement of the recoil spring?

[zamboni]

Excuse my ignorance; but, what is the purpose of the described placement of the recoil spring?

Sometimes during reassembly the end of the spring will poke out the front end of the slide. There was a post about setting the tag end of the spring to 12:00 to stop this issue. I didn't remember 12:00 post, but hopefully now I will remember next time I clean mine.

[Redstate]

Thanks, zamboni.

[Baklash]

That was it. The tag end at 12:00 to prevent spring from sticking out end of slide. Many thanks.

[Cubby]

I think that it is silly to have to position the spring a "Certain" way! None of my guns are that way, and I've never had any problems. I've been shooting for 60 years. And yes I do have a CM9. and sometimes the spring sticks out. I just re-do it. I've never paid attention as to whether it's 12 O'clock or not.

Sometimes I'm not sure about Kahr?

[muggsy]

If both ends of the spring were closed it wouldn't be a problem.

[deadeye]

I'm sure there is a reason for it. I just can't seem to figure it out. Does anyone know?

[East River Guide]

If both ends of the spring were closed it wouldn't be a problem.

I would gladly pay a few dollars more for a captured spring assembly. I just spent way too long wrestling with mine this morning. New P380 springs. Wasn't that the end was sticking out, but the second coil on the new longer inner spring kept blocking the guide rod from positioning properly in the slide. Arrrgh.

[Cubby]

Sometimes the way Kahr engineers a part becomes frustrating! But my CM9 has hundreds of rounds through it and not a problem....

[sas PM9]

I always position the end point of the RSA in the nearest to the barrel position commonly called the 12:00 position.
I believe that that was the conclusion of the original post some time ago.

-steve

[rickbsgu]

Not sure what we're calling '12:00' vs '6:00', since the slide is usually upside down when you put in the guide-rod/spring assembly.

I always turn it so that the open end is at the top of the slide (pointed down, if the slide is upside down.) Since you have to angle everything in from the bottom, that insures it bites into the corner & doesn't move.

Any other position, and the spring pokes through.


The other thing that drives me kind of crazy is the end of the guide rod is usually offset a little bit on reassembly and deadheads against the front of the slide. I had all kinds of angst putting the thing back together, until I realized why the slide wouldn't go back. A little bit tricky operation pushing the slide back and pushing on the front end of the guide rod to center it.


FWIW dept: 1911 springs are traditionally open toward the front.

[DJK11]

When it's time to replace springs purchase the Wolffs set and install the closed end to the front. Been doing this on my PM series guns for a few years.