Mag lips mod

[jg rider]

I was reading another thread about next rounds moving forward in the mag lips as a round was chambered. I always felt this was normal, but I never liked that the top rounds would always slide forward in the mag lips when in a mag pouch or pocket.

The only pouch I found that prevented this was the Hume with it's rounded bottom, but unfortunately Hume stopped making that design, so I wet molded the other Hume pouch.



After reading the thread I finally decide to see what I could do about the top rounds slipping out if the mag were dropped or hit. I don't think I'm the only one with this problem.

So we have a total of 8 K9 mags



I measured the width between the feed lips at the rear, just before the lips flare out, and at the end of the flare

The width measurements at the rear, middle, and nose were all over the place

Rear Middle Nose
.329 .334 .352
.330 .335 .343
.328 .334 .328
.332 .335 .354
.324 .325 .350
.324 .325 .348
.329 .340 .360
.332 .332 .351

So I decided to adjust all the lips close to the same width with a tool I made years ago to adjust feed lips



I decided to go with .326,325 for the rear. .326, 327 for the middle, and .330 the nose.

Here's a comparison of a before and after of the feed lips



We went out and fired each full mag twice without any ftf issues and any other kind of problem. I then remeasured the widths and they stayed the same.


Another plus we discovered was that the next round under the chambered one didn't slip out as far from under the feed lips




Next I'll do this mod on our PM9 mags

[gb6491]

Cool mod jg, thanks for sharing it with us.
I've a similar tool for adjusting High Standard magazines.

I've also found that modifying the follower or switching to Lakeline's follower has kept the top round from sliding forward in the mag lips when in a mag pouch or pocket.

Regards,
Greg

[jg rider]

Cool mod jg, thanks for sharing it with us.
I've a similar tool for adjusting High Standard magazines.

I've also found that modifying the follower or switching to Lakeline's follower has kept the top round from sliding forward in the mag lips when in a mag pouch or pocket.

Regards,
Greg

LOL ! Like this ?

[Bawanna]

I made a tool like that after you posted it originally long ago. Been lucky and haven't had to use it for mags yet but I'm ready if the day comes.

[jg rider]

I posted the tool before ? About what ? I don't remember ? Who are you ? Where am I ? TELL MEEE !

I'm gonna stop posting if I post the same thing all over again. Gonna do two things today. Go to DMV and surrender my driver's license, then bring all my toys to my neighbor / friend who's a deputy sheriff who's volunteered to turn them in for me.

I may be a possible threat to myself and others !

[CPTKILLER]

Interesting.

[jg rider]

I've also found that modifying the follower has kept the top round from sliding forward in the mag lips when in a mag pouch or pocket.

Regards,
Greg

Greg, I don't remember this. My memory banks are full. Link please. I'll always try to learn , no matter my condition

[Bawanna]

I posted the tool before ? About what ? I don't remember ? Who are you ? Where am I ? TELL MEEE !

I'm gonna stop posting if I post the same thing all over again. Gonna do two things today. Go to DMV and surrender my driver's license, then bring all my toys to my neighbor / friend who's a deputy sheriff who's volunteered to turn them in for me.

I may be a possible threat to myself and others !

I'll come down and pick em up. No sense you having to go all the way to the neighbors house and all. That's inconvenient.

In your defense (like you really need one) it never hurts to repost stuff now and then. New people coming in all the time and they can benefit from it. Along with folks like you and me with short memories and zero attention span. You might still have an attention span. That's an indication you have Dementia and not full blown Ahlzeimers.

I'm certain I made my tool using your picture but maybe I'm the one ready for the home.

[Tilos]

I was reading another thread about next rounds moving forward in the mag lips as a round was chambered. I always felt this was normal, but I never liked that the top rounds would always slide forward in the mag lips when in a mag pouch or pocket.

The only pouch I found that prevented this was the Hume with it's rounded bottom, but unfortunately Hume stopped making that design, so I wet molded the other Hume pouch.



After reading the thread I finally decide to see what I could do about the top rounds slipping out if the mag were dropped or hit. I don't think I'm the only one with this problem.

So we have a total of 8 K9 mags



I measured the width between the feed lips at the rear, just before the lips flare out, and at the end of the flare

The width measurements at the rear, middle, and nose were all over the place

Rear Middle Nose
.329 .334 .352
.330 .335 .343
.328 .334 .328
.332 .335 .354
.324 .325 .350
.324 .325 .348
.329 .340 .360
.332 .332 .351

So I decided to adjust all the lips close to the same width with a tool I made years ago to adjust feed lips



I decided to go with .326,325 for the rear. .326, 327 for the middle, and .330 the nose.

Here's a comparison of a before and after of the feed lips



We went out and fired each full mag twice without any ftf issues and any other kind of problem. I then remeasured the widths and they stayed the same.


Another plus we discovered was that the next round under the chambered one didn't slip out as far from under the feed lips




Next I'll do this mod on our PM9 mags

Nice work...
Especially when you consider the offset feeding ramp design of Kahrs, keeping the bullet pointed/guided in the right direction by the mag lips is important.

Thanks for the pics,

[jg rider]

Nice work...
Especially when you consider the offset feeding ramp design of Kahrs, keeping the bullet pointed/guided in the right direction by the mag lips is important.

Thanks for the pics,

Hi Tilos,
I wasn't oing to post these pic but I guess there will be those that wonder if I've created a problem with feeding because of the off set barrel ramp. If so I don't see it.

I tested by positioning the barrel out of battery as when the slide goes back, with a loaded mag inserted



The first thing that happens as the round is pushed foreward is it does a dip



Then the nose rises as the rim starts into the flared area of the feed lips



Then it hits the feed ramp



The round starts going into the chamber perfectly centered on the feed ramp



With my mod the feeding process of the bullet nose stays lined up with the feed ramp, so I don't understand why Kahr leaves such a wide gap between the front of the feed lips

[Tilos]

Hi Tilos,
I wasn't oing to post these pic but I guess there will be those that wonder if I've created a problem with feeding because of the off set barrel ramp. If so I don't see it.

I tested by positioning the barrel out of battery as when the slide goes back, with a loaded mag inserted

The first thing that happens as the round is pushed foreward is it does a dip

Then the nose rises as the rim starts into the flared area of the feed lips

Then it hits the feed ramp

The round starts going into the chamber perfectly centered on the feed ramp

With my mod the feeding process of the bullet nose stays lined up with the feed ramp, so I don't understand why Kahr leaves such a wide gap between the front of the feed lips

OK, thanks for the pics
Have you done the now common follower mod that Greg has perfected?
It could be a sticky in the prep forum.
It puts more pressure on the bullet/front of the ammo stack and eliminates the initial dip in the feeding cycle.

[jg rider]

OK, thanks for the pics
Have you done the now common follower mod that Greg has perfected?
It could be a sticky in the prep forum.
It puts more pressure on the bullet/front of the ammo stack and eliminates the initial dip in the feeding cycle.

I didn't know there was a follower mod until Greg posted earlier. I would have tried it if I'd known.

[Tilos]

I didn't know there was a follower mod until Greg posted earlier. I would have tried it if I'd known.

Do it now...it'll help
along with polishing/buffing the lips,

[jg rider]

I don't need Greg's mod now. Either I was reading the wrong thread or it seem that his fix was to be able to sling shot the slide.

I corrected that problem a long time go on our 4 Kahrs by modding the extractors that prevented the slide to go into battery. Never had a ftf of the round not starting into the chamber. We always load the first round by first locking the slide back and then drop a round into the chamber and then sling shot the slide. The extractor has to do a force feed instead of a controlled fed like when stripping a round out of the mag.

Greg also seems to have corrected the next round under the feed lips from moving forward his way.

My mag lip mod was to correct the top round from popping out of the mag if dropped, bumped or while in a mag pouch.

The unexpected plus that I can't explain why is now the next round under the feed lips when a controlled feed is done is that they seem to only move forward about only 1/8" at the most, and if I try to force it up out of the lips it doesn't pop out.

I think this happens be cause now the front of the lips are now putting side pressure against the sides of the case,
.330" front lip spread against .375" case diameter when lifted up .

Um ! I may have to rethink the lip spread and open them up a bit. Time will tell

[gb6491]

LOL ! Like this ?

No, nothing as nice as that Victor anymore. My inventory now consists of an H-D Military and a custom Duramatic.
Regards,
Greg