Possible faulty P-64?

barnett3006 · Post by **barnett3006** » July 12th, 2007, 11:37 am

not a true half-cock but it is a rebounding hammer which is basically an automatic half-cock

Post by **normsutton** » July 12th, 2007, 12:00 pm

frym

this is what it is supposed to look like with the side stop off if you have to pull the side stop off put the gun in a plastic bag that you can get both your hands in because the slide stop spring will go flying

NORM

Post by **normsutton** » July 12th, 2007, 12:21 pm

frym

if you would like call me and we will work this out together

scroll down on link to get phone #

http://p64.proboards67.com/index.cgi?bo ... 1179953781

NORM

blinddog · Post by **blinddog** » July 12th, 2007, 12:28 pm

Sorry, I think I was misunderstanding what you were concerned about. I did'nt mean to give you misinformation.

bzinggg · Post by **bzinggg** » July 12th, 2007, 12:34 pm

You are fine, blinddog, and this topic is great! Discussing these things with new owners and everybody else is part of familiarizing ourselves with our firearm and it's operation. That reduces accidental discharges and saves lives! What a great feather that is in the cap of everyone here!

bzinggg.

frym · Post by **frym** » July 12th, 2007, 1:00 pm

You are right on bzinggg. This sneaky little problem, and it does seem to be a problem, could really cause a tragedy.

I almost blew it off and didn't see it as a problem, but for some of the other postings here.

Don't have the gun with me now. When I get home I will work on Norms and Barnett suggestions.

Barnett: I am pretty sure the sear plunger spring you mention is there, but it does seem to be shorter than what the image/manual link you sent shows it to be, hard to tell. Maybe it is weakened or broken. With it being an automatic half-cock, how does the "auto" part work? With the slide off, is there a way to force its half-cock engagement to see if the sear plunger spring is too weak? Replacement spring availability???

NORM: Would be glad to buy a truck load of your springs it that is the problem. Will take a look as soon as I get home and see if the trigger spring is positioned correctly. The trigger bar has never come out on me as some on this forum have posted. It does seem to have a fair bit of free play though.

barnett3006 · Post by **barnett3006** » July 12th, 2007, 1:24 pm

the hammer is brought to its "at rest" position when the trigger is released (transfer bar is moved back to "at-rest" resetting the sear), the hammer may also bounce off of the slide (i am unsure of this). The spring keeps the sear under tension so that it stays in this "half-cock" notch.

You can test this by pushing the exposed part of the sear (use a plastic tool like the back end of a Bic pen); gently pushing the sear towards the barrel will engage the sear into the notch and you should not be able to push the the hammer forward with your thumb.

Cock the hammer and then use your tool to hold the sear in its rearward position, thumb the hammer down to its at-rest position while holding the sear...the hammer will be able to move forward when you push on it with your thumb.

also, there is a guide pin that runs through the sear spring; the end of the pin should be flush with the outside of the exposed part of the sear when the hammer is down.

as far as a replacement goes, I believe that a quality spring from a hardware store would work just fine, provided that the replacement spring is of the same dimensions as the factory spring would be.

frym · Post by **frym** » July 13th, 2007, 6:21 pm

Ok, have been all over the gun now:

Barrnett: The sear plunger spring is there and looks in good shape, and the rod is there going through it. The end of the rod is flush with the hole in the sear. Pushing the top of the sear towards the barrel does not really move it all, since the bottom of the sear is well engaged in the notch on the hammer.

NORM: The trigger bar does not come out by tugging on it, and I did not want to be too forceful. I can see from the right side the the trigger bar spring is correctly mounted under its pin. Thanks for your offer to call you, might take you up on it. What would be some good times to call?

Stibnite: Your diagram posting seems to show the gun in DA mode and mine seems to operate correctly.

All the notches on the sear and hammer seem to be great shape, nothing seems to be missing or bunged up. All the engagements seem to be good. The SA pull is very light though, very nice, but it is rather light.

Spent all last night going over it, and it seems that this is simply how the gun operates: With the safety OFF you can lauch a pencil out of the barrel by flicking the hammer (before in engages the sear). Once the hammer engages the sear, it does firmly stay cocked/put till the trigger is pulled, or the decocked by the safety.

This simply seems to be the way that this particular gun seems to work. I see this as a flaw. Or, are there varients in tolerences? My mind is wide open.

stibnite · Post by **stibnite** » July 13th, 2007, 6:48 pm

I don't know if you've mentioned it, but how far back does your firing pin protrude from the safety (when set to "fire")?

I believe they should be almost flush. There was a thread on this way back when.

Post by **normsutton** » July 13th, 2007, 6:48 pm

frym

well I'm stumped with out holding it in my hands ,you and thesaint are the only two I have heard of with this problem
I say send it back to SOG

NORM

frym · Post by **frym** » July 13th, 2007, 7:07 pm

stibnite: in ready to fire mode the rear of the firing pin is not flush with adjacent surface of the safety, it sticks out, not a huge amount, but it clearly does stick out. Issue? Fix? Hammer would still hit that area when flicked.

NORM: I think the saint got his from SOG. I got mine through a private transaction.

Mine is the one with the thumbrest on the left grip, if that means anything.

Post by **normsutton** » July 13th, 2007, 8:19 pm

frym

stibnite has to be right ether a buggered sear or hammer give it back to the one who sold it to you let him try to find parts for it

NORM

barnett3006 · Post by **barnett3006** » July 14th, 2007, 12:04 am

I wonder if the previous owner gave it a home trigger job and went a little nuts with the dremel tool. You would have to take the gun completely apart in order to find out.

stibnite · Post by **stibnite** » July 14th, 2007, 12:13 am

It's an interesting problem. I can reproduce the pencil flying out by flicking the hammer ONLY if I have the trigger held back all the way. So it would seem that frym's sear just isn't locking against the hammer correctly.

Here's another good picture (shows the hammer fully cocked):

Post by **normsutton** » July 14th, 2007, 4:37 am

barnett3006

I was wondering the same thing

stibnite

nice pix
like you said I've try to do it with all four of mine and I can't get the pencil to move with out holding the trigger down ether , in fact I find it very hard to flick the hammer with out going in to full cock

NORM

The Unofficial P64 Resource Forum