Shadow Extended Firing Pin

[dross]

I have an SP 01 Shadow Custom that I love. I'm getting fails to fire with some ammo. It has a 15lb mainspring, which isn't supposed to give light strikes like the 13 pounder. I'm thinking of buying an extended firing pin from Cajun Gun Works, but it says on the site, "not recommended for concealed carry." Anyone know why they give this warning? What's the issue? Is it a reliability or a safety issue?

[Smitty79]

A Shadow Custom comes with an extended firing pin and a 13# main spring.    I put an 11.5# main spring in mine and it's still flawless on CCI primers.   I suspect something else is wrong.

[Old Rocket]

 Shadows have no firing pin block so with an extended firing pin with one in the chamber and hammer down might go off if hammer is hit hard enough. This could really happen with any extended firing pin in a hammer fired gun unless it is cocked and locked.
 I agree with another problem and would look at the hammer spring and then the firing pin and pin springs. I had a firing pin spring break and bind up my pin. Thankfully caught it right away be for any damage to other parts.

[dross]

Shadows have no firing pin block so with an extended firing pin with one in the chamber and hammer down might go off if hammer is hit hard enough. This could really happen with any extended firing pin in a hammer fired gun unless it is cocked and locked.
 I agree with another problem and would look at the hammer spring and then the firing pin and pin springs. I had a firing pin spring break and bind up my pin. Thankfully caught it right away be for any damage to other parts.

Mine came with a 15lb spring. It's a bit of a different model. It comes with the Champion hammer rather than the competition shaped hammer.

To provide a bit more info, it only happens on the first round loaded from a  magazine and mostly happened (maybe every time) when I release the slide stop, not when I operated the slide manually.

[Old Rocket]

Usually custom shadows have an extended firing pin, this is something that you must confirm.

You should try to take a round out of the magazine, load with one less to see if that makes a difference. If it does leave your mag full for a couple days to relax the spring tension.

[coolbox]

What ammo are you using?
Please also check that the slide is going into full battery,  as it could be an issue particularly in the first round due to the slide not slamming back and forth with full recoil force. Usually happens with out of spec or marginally spec'd ammunition, mostly reloads with insufficient case resizing.
Further, also check if the slide stop is in any contact with the feeding rounds, inside the frame.
if the slide is not in full battery, the hammer strike would mainly push the slide forward, and give a very light impression/strike on the primer.