Author Topic: Firing pin movement.  (Read 617 times)

0 Members and 1 Guest are viewing this topic.

Offline d-tronics

  • Newbie
  • *
  • Posts: 24
Firing pin movement.
« on: July 25, 2018, 07:39:49 PM »
Hello all,

Just wondering if it's normal if the firing pin should be able to move even if the firing block/pin safety isn't depressed?

Sent from my HTC One M9 using Tapatalk


Offline biggerhammer

  • Full Member
  • ***
  • Posts: 135
Re: Firing pin movement.
« Reply #1 on: July 25, 2018, 07:59:04 PM »
I can move mine without having to depress the firing pin block on both of my scorps with not much effort. I believe there is a design flaw but the last guy that tried to point it out on here got roasted so... :-X

Offline d-tronics

  • Newbie
  • *
  • Posts: 24
Re: Firing pin movement.
« Reply #2 on: July 25, 2018, 08:09:07 PM »
I can move mine without having to depress the firing pin block on both of my scorps with not much effort. I believe there is a design flaw but the last guy that tried to point it out on here got roasted so... :-X
Good to know.

I noticed I can push my firing pin all the way forward to the point it's protruding out of the breech face without depressing the safety block. Don't know if that's normal?

Sent from my HTC One M9 using Tapatalk


Offline d-tronics

  • Newbie
  • *
  • Posts: 24
Re: Firing pin movement.
« Reply #3 on: July 25, 2018, 11:20:55 PM »
I emailed cz regarding this issue.

Sent from my HTC One M9 using Tapatalk


Offline biggerhammer

  • Full Member
  • ***
  • Posts: 135
Re: Firing pin movement.
« Reply #4 on: July 26, 2018, 09:09:37 AM »
Okay cool, It'll be interesting to hear their take on it.

Online M1A4ME

  • Hero Member
  • *****
  • Posts: 4712
  • I've shot the rest, I now own the best - CZ
Re: Firing pin movement.
« Reply #5 on: January 21, 2019, 05:09:43 PM »
I know this is an old post.  I don't have a Scorpion but I've seen firing pins protrude through on pistols.  It might be a firing pin that's not made quite right.  I believe that is what it was on my pistol.  One firing pin would protrude through the hole, the other would not.  No trouble guessing which one didn't stay in the pistol.

I did not measuring of the firing pin retaining pin slot in the firing pin to see what was different, I just figured that was the cause.

I don't even know how the firing pin is retained in the Scorpion.  Just saying, it may not be the fault of the firing pin blocking system.
Better to have it and not need it, than to need it and not have it.  So, if you see me walking the dogs with my SIG 556R, its okay.

Offline biggerhammer

  • Full Member
  • ***
  • Posts: 135
Re: Firing pin movement.
« Reply #6 on: January 21, 2019, 07:14:59 PM »
Both of my firing pin blocks don't stop the pin from advancing forward when they should. You can apply forward pressure on the firing pin without depressing the firing pin block resulting in the firing pin advancing all of the way through the bolt. Sometimes, the fpb will attempt to stop the firing pin from advancing but increasing forward pressure easily overcomes the block. Someone's math was off about .030" to .040" when the designed the pin/block assembly.

Offline wyoung

  • Full Member
  • ***
  • Posts: 172
Re: Firing pin movement.
« Reply #7 on: January 30, 2019, 10:55:43 PM »
I think I'm the one who posted the video where I was able to get the firing pin past the firing pin block. I took it off after all the hate.

The problem is the FPB spring is too light. I found a very simple fix. I took an AR15 selector detent spring then used a Dremel cutoff wheel and cut it the same length. The new spring is just heavy enough that I can't reproduce the problem no matter how hard or often I try. I'm 100% confident in it now.

Offline romukom

  • Full Member
  • ***
  • Posts: 314
Re: Firing pin movement.
« Reply #8 on: January 30, 2019, 11:30:41 PM »
Nice fix.

 

anything