Author Topic: P-07 DA great - SA no go  (Read 2002 times)

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Offline itczpz

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P-07 DA great - SA no go
« on: December 07, 2016, 09:26:47 PM »
I have 2 P-07's. I put the CGW upgrades in both identically. The Standard P-07 works great but the Urban Gray only works in DA.  I treated both the same way ... polished per the tune up thread, RP-TRS trigger spring, Short reset kit, Self defense spring kit with yellow 18# spring, basically pro upgrade kit without the hammer.  The DA in the grey works great as does the decocker but SA will not work unless I depress the sear.  I'm using the yellow sear spring in both guns but in the grey it's almost like it's putting too much pressure on the leading edge to allow the hammer to engage.  Looking at them side by side, they appear the same.  Just wondering if anyone else has run into this.  Sounds like another call to CGW ... my wallet isn't going to like it, lol
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Offline schmeky

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Re: P-07 DA great - SA no go
« Reply #1 on: December 07, 2016, 10:14:06 PM »
itczpz,

Yes, by all means give us a call.  We see this in about 1 in every 150-200 CZ's.  We can help you get it running fine and there is a very good chance, it won't cost anything.

The tolerances in your particular CZ stacked the wrong way. 

Offline copemech

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Re: P-07 DA great - SA no go
« Reply #2 on: December 07, 2016, 11:54:56 PM »
So Do tell us what he says! He never tells us anything!

One day soon he is gonna start charging us by the minute on a 900 number. Like phone sex! O0

Offline thebeardedgunner

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Re: P-07 DA great - SA no go
« Reply #3 on: December 09, 2016, 11:33:49 AM »
I have 2 P-07's. I put the CGW upgrades in both identically. The Standard P-07 works great but the Urban Gray only works in DA.  I treated both the same way ... polished per the tune up thread, RP-TRS trigger spring, Short reset kit, Self defense spring kit with yellow 18# spring, basically pro upgrade kit without the hammer.  The DA in the grey works great as does the decocker but SA will not work unless I depress the sear.  I'm using the yellow sear spring in both guns but in the grey it's almost like it's putting too much pressure on the leading edge to allow the hammer to engage.  Looking at them side by side, they appear the same.  Just wondering if anyone else has run into this.  Sounds like another call to CGW ... my wallet isn't going to like it, lol

I had the same issue with my Urban Grey P07. It was explained to me as stacking tolerances that put mine right on the brink of the SA just barely working. I could pull the trigger all the way to the rear of travel and then I'd have to squeeze it just a little harder to get it to click. By all means call CGW and he explained it very well and offered various options. The one I went with and am completely happy with, was taking a small file and lightly taking a little material out from behind the trigger to give it just enough travel to drop the hammer reliably. Mind you mine required very little to be removed. It worked every time with quick firing due to the added pressure but on slow concentrated firing I wasn't applying enough pressure.

Offline itczpz

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Re: P-07 DA great - SA no go
« Reply #4 on: December 09, 2016, 06:34:33 PM »
I had the same issue with my Urban Grey P07.

That's the same one I've got so thanks for the response.  I did speak with David and he explained that CZ has reconfigured their triggers but, unfortunately, I don't see where taking anything off my trigger or behind the trigger will help. 

So, next option is to file a little off the hammer.  I too can squeeze the trigger but it's just a hair to short to release the hammer.  If I bump the hammer, it will go though. I'll probably take both P-07's apart this weekend and compare hammers and triggers and then see if I want to tackle it. 

3rd option-send the hammer to CGW and let them grind on it. It's not even his hammer but he's willing to do it ... that speaks volumes about his business ethics.

4th option - buy one of his hammers.  Hmmm, sounds like an excuse justification to me.  This is not going to be a carry weapon (my other P-07 is) so I wouldn't feel uncomfortable doing it and I'd planned on doing it anyway.

It all makes sense though considering these are not uber precision firearms, but with CGW's help, they have a chance of running with the big dogs for a lot less. :P
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Offline Boriqua

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Re: P-07 DA great - SA no go
« Reply #5 on: December 09, 2016, 08:19:40 PM »
Oh my I am sooooo happy with their hammer. I know its kind of a chunk of money to spend on a somewhat discounted gun but ... Oh its so bleep awesome now. Buy the hammer!   :)

Offline thebeardedgunner

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Re: P-07 DA great - SA no go
« Reply #6 on: December 12, 2016, 04:07:59 PM »
I had the same issue with my Urban Grey P07.

That's the same one I've got so thanks for the response.  I did speak with David and he explained that CZ has reconfigured their triggers but, unfortunately, I don't see where taking anything off my trigger or behind the trigger will help. 


Glad you got up with him and thats exactly the issue I had. In my case I didn't remove material from the trigger, just just a small amount of filing was required at the back of the channel where the trigger contacts the frame. If you take the slide off and watch the trigger as you pull it back you'll see where it hits the frame. You just aren't getting enough movement in the trigger to let the sear release the hammer. Mine was very close so the amount of material removed was minimal and was the easiest option to get my pistol functioning.

Offline itczpz

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Re: P-07 DA great - SA no go
« Reply #7 on: December 27, 2016, 08:56:18 AM »

I didn't remove material from the trigger, just just a small amount of filing was required at the back of the channel where the trigger contacts the frame. If you take the slide off and watch the trigger as you pull it back you'll see where it hits the frame. You just aren't getting enough movement in the trigger to let the sear release the hammer. Mine was very close so the amount of material removed was minimal and was the easiest option to get my pistol functioning.

Finally got a chance to do some more filing on my P-07 ... holidays got in the way.

Initially, I filed a little off the back of the trigger but that was pretty tough while still installed.  I didn't realize the trigger was metal; I thought I had read that they were polymer.  At any rate, I got it so close that the SA would work part of the time but was not consistent.

Now, David had mentioned filing a little off the frame but it didn't dawn on me, until I read your post, that I would have better access if I removed the slide.  When I saw the square cutout for the trigger, I realized what both of you were talking about.  Only problem was that I didn't have anything small enough to file it so I found a small triangular file on Amazon that fit just perfect.  You were right about it not taking much effort to remove a little plastic.  Took about 15 minutes between filing and testing but now it works every time. I may still, and probably will, get CGW's hammer for this P-07 but for now, I'm GTG.  ;D

Thanks again for the suggestion.
0]]]]]]]]]]]]]]]?      I know what I know and I know and I know what I don't know ...
       [_)_\ --  >      It's what I don't know that I don't know that will get me.
               \--(        
                \--\       
                 \_/