Firing pins and cam pins

[georgeib]

It's not powder, but it's not shiny like every other firing pin I have seen.

It's a strange light gray which the picture almost catches.

Just interesting as I have not seen this in hundreds of firing pins I have handled over the years.

A "normal" FP on the left.

Dennis.

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Is it just me or is the dull colored one seem to be dimensionally larger than the one on the left? It looks like it's larger diameter, and the flange looks thicker too. Do you have a micrometer or calipers to check with?

[Dennis]

Image distortion given the extreme camera angle and cell phone correction firmware.

Dennis.

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[EzGoingKev]

I'm just weird and like to run the large spool firing pins... even though some of the BCM BCGs have come with the small spool. Small spool just irritates me because it's part of the ramped carrier/type II hammer political correctness from previous Colt offerings.

I only run the large collar pins too. It has a wider contact area against the cotter pin.

[lysander]

Why would they take an extra manufacturing step?

Unless you mean shot peened which makes it awesome which means I need to buy a dozen new firing pins ;-)

Dennis.

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Bead blasting a part hides all manner of sloppy machining, and, is faster and cheaper than careful machining.

[Dennis]

Bead blasting a part hides all manner of sloppy machining, and, is faster and cheaper than careful machining.

Well I guess I just need one new FP now.

Thanks!

Dennis.

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[EzGoingKev]

Bead blasting a part hides all manner of sloppy machining, and, is faster and cheaper than careful machining.

OR it gives you a uniform finish that you want.

[lysander]

Well I guess I just need one new FP now.

Thanks!

Dennis.

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Why do you think you need a new firing pin?