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Discussion Starter · #1 ·
I bought a used second generation P3AT last week. I took it to the range and ran about fifty rounds through it without a problem.

I went to the range again and after a few shots the takedown pin started backing out. I pushed it back in and fired a few more rounds and it backed out again. Pushed it in, fired, etc..

So? What's going on here? What do I need to fix to get this thing to work properly?
 

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The assembly pin is retained by the assembly pin spring. Very possibly it has been bent or damaged during reassembly. It is shaped like a little hair pin and the legs fit into two grooves in the frame. Look at the diagram in your manual. I think it is part# 284 or 285, if memory serves me. You may be able to tweak it back. When the pin is inserted you should hear a click as it snaps into place on the pin. A new one is not expensive, and easy to replace if the old one is beyond saving.
 

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Discussion Starter · #3 ·
Silly question, maybe . . . I don't have the gun anywhere near me right now.

Does the takedown pin go between the legs of the spring or does the top leg get compressed and push up on the pin?
 

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Does the takedown pin go between the legs of the spring or does the top leg get compressed and push up on the pin?
Pin goes over the top leg of the spring. Top leg of spring presses upward on the bottom of the pin.
 

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When the spring is in the right place you can see it when you're trying to push the pin back in. I sort of angle my pin upward a smidge then push down a little on the spring as I push in back in.
 

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Discussion Starter · #6 ·
So today I took the gun apart and cleaned it. I also spread the spring in question a bit so that it would apply more pressure to the takedown pin.

Went to the range and fired about thirty or forty rounds with no problems. Then I had a failure to extract and when I dropped the mag, the slide went home and I couldn't budge it. So I pulled the pesky pin, got the barrel out, and got the case out. Put the gun back together and resumed shooting. About five shots and another FTE AND the pesky pin is walking out. Clear, push the pin in, resume shooting. Another FTE and the pin is walking out again.

I guess that it is time for a new spring or maybe a new gun.
 

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So today I took the gun apart and cleaned it. I also spread the spring in question a bit so that it would apply more pressure to the takedown pin.

Went to the range and fired about thirty or forty rounds with no problems. Then I had a failure to extract and when I dropped the mag, the slide went home and I couldn't budge it. So I pulled the pesky pin, got the barrel out, and got the case out. Put the gun back together and resumed shooting. About five shots and another FTE AND the pesky pin is walking out. Clear, push the pin in, resume shooting. Another FTE and the pin is walking out again.

I guess that it is time for a new spring or maybe a new gun.
No need for that. You don't seem to be extremely mechanical. If I was in that situation, I would just send it to KelTec. If you bought it from or know a FFL dealer, get him to send it for you. Postage is much cheaper that way.
 

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Discussion Starter · #9 ·
There was a pretty good write-up on assembly pin retention and some simple mods, over on this site--
Thanks, very interesting and helpful.

No need for that. You don't seem to be extremely mechanical.
Anyone who knows me would be on the floor laughing at that comment.

Not to denigrate your favorite gun but I've never had this many problems with a new-to-me gun in forty years of buying guns. I don't mind messing with things to get them to work but I bought this gun for carrying, not tinkering.
 

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Anyone who knows me would be on the floor laughing at that comment.
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Really?.. Explain please what position the slide was in before you dropped the magazine and the slide slammed forward. Then explain, please, how you removed the assembly pin with the slide in the full forward position. It would also help if you could post some pictures of the pin and spring, and if possible the inside of the frame with the spring removed.
 

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Discussion Starter · #11 ·
Really?.. Explain please what position the slide was in before you dropped the magazine and the slide slammed forward. Then explain, please, how you removed the assembly pin with the slide in the full forward position. It would also help if you could post some pictures of the pin and spring, and if possible the inside of the frame with the spring removed.
It was back , I didn't measure how far back, back far enough that the empty case was jammed between the face of the slide and the barrel. I dropped the mag and the slide went home, pushing the empty case back into the chamber.

The assembly pin comes out easily with the slide in the full forward position. I just used my Tom Mix pocket knife and popped it out. Do you have trouble taking your gun apart?
 

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It was back , I didn't measure how far back, back far enough that the empty case was jammed between the face of the slide and the barrel. I dropped the mag and the slide went home, pushing the empty case back into the chamber.

The assembly pin comes out easily with the slide in the full forward position. I just used my Tom Mix pocket knife and popped it out. Do you have trouble taking your gun apart?
It would appear that you have this under complete control, and need no further assistance. Good luck with your KelTec.
 

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Discussion Starter · #14 ·
Fixed it

I suppose it would have helped if I had paid attention to the part of the manual that says to press on the frame whilst popping the takedown pin out.

Apparently, the upper leg of the aforementioned pin had come adrift which is why I could fiddle with it without dismantling the gun. Who'd a thunk that an important spring wouldn't be secured somehow.

Anyway, I took the gun apart completely which afforded me the opportunity to clean it thoroughly and get crud out of the nooks and crannies.

I dug out the Dremel and some jeweler's rouge and did the recommended polishing.

Put the gun back together and headed to the range.

Half a box of Tulammo, half a box of Remington FMJ, and half a box of Winchester White Box. Nary a burp, misfeed, or FTE and the pesky pin stayed in place.

Interestingly, I found that at 20 feet, I can keep smaller, much smaller, groups without using the sights and the shots go where I want.

All in all, I'm pretty happy.

Next time, apply pressure to the frame next to the take down pin to keep the danged spring in place.
 
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