The Unofficial P64 Resource Forum

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Hi friends! Well, it seems I have a DA/SA problem too, but not the same as others have described. I am pretty sure it happened on occasion before I put Norm's new trigger spring in, so I don't believe my work on that is the problem, but don't know. Here's what happens every time with a clean gun, different ammo and either mag:
1. Fill the mag and tap the spine to properly seat the cartridges.
2. Insert filled (6) mag and rack the slide with safety OFF.
3. Apply safety to drop the hammer and cushion it with thumb.
4. Return safety to OFF, horizontal.
5. Pull trigger and fire gun in DA.
6. Gun resets in SA.
7. Pull trigger and fire gun in SA.
8. GUN RESETS IN DA (HAMMER DOWN) No slam fire.
9. Pull trigger and fire gun in DA.
10. Gun now resets in SA and remains so for remainder of mag.

This happens in this sequence with every single mag and different ammo. The third shot is DA but should be SA!

Am I doing anything wrong? I don't think it is a sear/hammer problem because when the hammer resets in DA it does not slam fire (go full auto). I think it is a trigger/trigger bar problem???? The safety is not broken, nothing is actually. Something just needs tweaked?

Help? Dave

Davebird,

I'm a novice on this, but you may find an answer to your problem in a message on this board. Go to the Topic "D/A Issue" on this board under the same site you posted your message. There seems to be some similiar items that you mention that are on the other message.

Hope this helps.

SWD

Dave

try racking the slide with the safety on
then put the safety off an see what happens
frankly I don't ever use the safety on mine

NORM

Thanks fellas. I did look back at the previous post and it might be the same thing, but I don't think so. After the second round fires instead of the hammer staying cocked in the SA mode for the third round, the hammer falls so that the third shot is always DA. My gun is very clean and even so, since it happens with so much regularity, I think it is more of a mechanical glitch than soil.

I don't use my safety either Norm, except as a hammer-drop to drop the hammer on the first round. Other than that, it is off (horizontal) during firing and even when I carry it.

What's weird to me, is I have had worn sears on other semi-autos and those allow the hammer to drop on the next round instead of leaving it cocked. And, when that happens the guns go full auto until the clip is empty. That is NOT happening with my P64!! Although the hammer is not cocked for the third round it does not strike the primer. It waits until I pull the trigger and acts in DA. So, I don't think it is a worn sear or hammer spur. Odd.

DAVE

it could be the Hammer Strut
does it look like this
http://www.tnguns.com/shop/index.php?mai....1edfb9e 917bad3

NORM

Hi Norm! Yes, that looks like my hammer strut.

Well fellas, it quit raining here in Pittsburgh so my son and I went back the range to fight the now zero wind chill factor and try the P64 again. I had removed the finish-brown crap from the trigger bar and slide release lever so they are back to the original in-the-white. Boy, this gun is really smooth but I am still getting the occasional DA in the midst of firing a magazine. I can't believe the gun isn't going into full auto, just the hammer drops so the next shot is DA instead of SA.......very odd. The safety is not broken and in fact the only time it is used is to drop the hammer on the first round so I can carry it with one in the tube.

Any other ideas yet? I am baffled. ???

I'm not sure of the issue causing your malfunction, but I personally would start easing the hammer down by hand in lieu of using the safety as a decocker.
In your 1st post, you describe your process and using the safety to lower the hammer. What happens if you simply load it and fire through the magazine?

Hi dickfunk and Happy New Year!! Thank you for responding to my strange problem.

First, I do ease the hammer down when using the safety to drop it. I've read where parts are not too available and won't slam the hammer on the safety. And, I use the safety because it is much safer than using the trigger to drop the hammer on a live round.

Next time out I can try your idea of just racking the slide, but when I carry the gun there njeeds to be a round in the chamber so my first shot is ready to go with a DA pull. Shots after that should be all SA but for some reason every here and there the hammer follows the slide forward and resets in DA. I really don't use the safety when firing at all so don't believe that is the problem. I only use it to lower the hammer on the first round which is sitting in the chamber after racking the slide.

I know...it frustrating....I'm sorry! :-/

Dave

Can anyone at least tell me what parts to examine for possible wear or nicks, or? I honestly do not know why, in the middle of firing a magazine, the hammer drops and resets in DA. All shots (except the first of course) should be SA.

Thank you, Dave

Dave

you could have a bad sear or a weak sear spring
http://www.tnguns.com/shop/index.php?mai....1edfb9e 917bad3

http://www.tnguns.com/shop/index.php?mai....1edfb9e 917bad3

NORM

I am away from home and do not have access to my P-64, but it sounds to me as if either the sear is not holding the hammer back in the full cock position every time or that the disconnecter is not resetting the sear every time. Generally speaking a slam-fire occurs when the sear releases the hammer as the slide slams to a stop when it hits the barrel hood. Having the hammer "ride" forward with the slide doesn't usually cause a primer to detonate. I suspect the disconnecter.

Thanks, fellas. I do fear a sear problem, yet I do NOT get slam fires. The hammer simply seems to reset in DA for the next shot. With other guns of mine a slam fire was due to either a worn sear or hammer spur.

Maybe the disconnector is something I will examine more closely before tearing apart the sear. If at some point someone could simply explain what the disconnector is on the P64 and what it is supposed to do, maybe I can see what's up. I read where someone had to take some off the top and another took some off the bottom to solve different DA problem. But, maybe I'll need to do something like that too? I don't know...this has never happened to me before and I am new to the P64.

Thank you, Dave

Dave

I don't suggest you grid on any part of the gun. that might the problem some body ground it

NORM

No, my disconnector was not tampered with, Norm. It's all blued.

I removed my slide. I notice that my disconnector moves up and down freely. If I push down, the hammer releases. But without pushing the disconnector down, it just flops up and down. Is that normal?