Beveled Prong

[JohnR]

My K9’s slide isn’t as smooth running as my CM9’s. Also, there is sometimes a hangup about a quarter inch short of battery. That only happens during hand cycling, not actual live fire.

I hereby establish that the metal thingy pointing toward the muzzle, just under the slide, has the technical term of “prong.” Justin Moon may think it has some gun-engineering (gungineering?) technical name, but for this thread it’s a prong. :)

My CM9’s prong is beveled, my K9’s isn’t. Could that be hanging up my slide and making it rough to cycle?

The K9 has about 500 or more rounds through it, so I’d say it’s broken in.

Oh, also - the flange end of the K9’s guide rod is getting mangled. Seems like it shouldn’t be.

[Bawanna]

The prong thingy whose description works perfectly in this context is the ejector. The case bangs into that prong thingy and consequently gets tossed out the ejection port, that hole on the right side of the slide.

I just took my K9 apart and my prong thingy looks exactly like yours. I think it's ok. I neglected to see if I noticed any hangup working the slide.

If memory serves my PM45's prong thingy is tapered a bit like your CM, heavy emphasis on if my memory is working.

Do you notice the hang up going into battery or coming out of battery.

I think your good to go, we'll have to investigate the hang up.

[JohnR]

Comin’ and goin’, yes. Feels like driving on a road that needs new asphalt. In stark contrast to the glassy smooth trigger.

[Bawanna]

When I reassembled my K9 I worked the slide several times and detected a resistance about perhaps a 1/4'' before going into battery. Not really a hang up and not rough at all, just a resistance, like it's riding on something. I suspect it's something in the rear by your prong thingy. Like the cocking cam or something. Mine rides over it just fine but I to detect resistance.

[JohnR]

Yes, I wondered if the cocking cam or other little fiddly bits was also dragging. I just want it to be the perfect little Swiss watch I envision it to be. The slide ought to glide smoothly like Nancy Kerrigan across the rink.

[JohnR]

I just ordered a Lakeline guide rod after seeing it has a much thicker head, kinda like me.

[Bawanna]

Nobody gots a thicker head than me, what size hat you wear? I'm almost comfy in a 8. Usually 7 3/4 is tight.

[JohnR]

7 5/8. So with a thick skull you know my brain cavity size isn’t much to brag about.

[Canine Dave]

In a recent post by Jr member wonmug he said this...

Bought a K9 back in 1998 -- still have it. When I first fired it, I had 1 out of 3 failures to return to battery;I returned the pistol to Kahr, They polished the ejector a bit and did some other tweaks. After that she behaved well.


When I read that post I thought, yeah, right, who would polish an ejector of all things. So now thinking maybe? This is a Kahr, after all. If it moves, polish it, if it doesn't move, polish it.

So, for reliability, let's all get a Flitzin' our ejectors.

[JohnR]

Wife: “Whatch doin’, honey?”
Husband: Just flitzin’ my ejector!”

[tokuno]

Wife: “Whatch doin’, honey?”
Husband: Just flitzin’ my ejector!”
While thinking about Nancy Kerrigan gliding across the ice?

[Bawanna]

I think he probably meant to say they polished his extractor, there is often times a benefit to that, I see no positive influence in polishing the ejector. It's just a solid almost non moving block that the case slams into when the slide come back. The extractor having to ride over the case rim on the other hand might hang up if it was rough.
As part of my looking cool at all times methodology I totally agree with the polish it plan regardless. Course polishing the ejector is like chrome valve covers, nobody see's it unless the hood is up unless of course you don't have a hood which is kind of cool in itself.
Getting snow neck deep on a giraffe here in bawannaville.

[JohnR]

While thinking about Nancy Kerrigan gliding across the ice?
Well, not gliding across ice, exactly.

[Cokeman]

I thought the 1/4 resistance thing was by the barrel lug pivoting on the take down pin.

[JohnR]

That could be!

[texjack]

My K40 used to have the same resistance just before battery. I thought it was a tight barrel lockup. It stopped doing that after break-in. Another reason why these little pistols are so accurate!

[BirdsThaWord]

Wife: “Whatch doin’, honey?”
Husband: Just flitzin’ my ejector!”
Insert multiple laughing emoji’s!!!

[JohnR]

The last range trip with the K9 was horrible. Failures to lock open, to feed, and one stovepipe, and racking the slide was unusually difficult. I cleaned it and installed the Lakeline guide rod this morning and ran snap caps through it, and it was smooth. But it was smooth before, too, so I won't know if it's working well till the next range trip. When I sprayed out the frame with Brakleen, an alarming quantity of brass dust came out. So if it's not running right after this, it's going to Woostah for some TLC.

Here is the old guide rod.

https://i.postimg.cc/05MpRZJ0/2021-02-23-10-12-08-1.jpg

[Canine Dave]

This is indicative of something that needs a good polish.

[JohnR]

I don’t know what else to polish.

[gb6491]

Any sign of damage/wear to the lower barrel lug?

[JohnR]

No, that area looks clean and unmolested.

[Canine Dave]

Any sign of damage/wear to the lower barrel lug?

I like to try and understand issues others might be having with their k9 so I can watch for similiar symptoms with mine and be able to fix it.

I struggle sometimes with the different nomenclatures.

Can you explain what part of the barrel (if it is part of the barrel) the lower barrel lug is?

Dave

[JohnR]

I'm assuming it's this:

[JohnR]

Huge improvement but not perfect. Sixty eight rounds fired, five different mags. One premature slide lock, Two partial feeds. During the partial feeds, I had my pinkie wrapped around the end of the mag. That’s gotten me on other Kahrs, causing misfeeds. When I extended my pinkie like a proper tea-drinking gentleman those failures stopped. The slide lock on second to last round, I don’t know.

The slide is also extremely hard to slingshot, and fuggetabout using the slide release lever.

[Canine Dave]

and speaking of "beveled prongs", does anyone here know what this is?

17458

[JohnR]

^^ I think I saw one of those hanging on the wall at C r a c k e r Barrel once. :D

[dustnchips]

Picking up Hay?

[Canine Dave]

it's a Wouff-Hong.

[Cokeman]

Good to know