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Firing Pin Protrusion


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#1 StrangeRanger

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Posted 05 May 2019 - 08:49 PM

What is the correct firing pin protrusion for a Thompson M1?


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#2 Adg105200

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Posted 07 May 2019 - 07:27 AM

A1 fixed firing pin bolt or separate moving pin?

Andrew
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#3 hawksnest

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Posted 07 May 2019 - 07:59 AM

You may want to buy the firing pin gauge.  They are cheap - just keep an eye open.


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#4 Bridgeport28A1

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Posted 07 May 2019 - 08:01 AM

You will find the Max. and Min. listed on the WW2 gage photographed in this thread. Surplus gages as pointed out above are availalbe from several sources.

 

H .050 and L .044

 

http://www.machinegu...showtopic=22049


Edited by Bridgeport28A1, 07 May 2019 - 08:14 AM.

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#5 mnshooter

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Posted 07 May 2019 - 09:36 AM

Just measured a brand new in the wrap M1A1 "S" Savage bolt:  .040"  Protrusion, carefully measured with a depth mic.

 

If it wasn't for Bridgeport's posts, constantly forcing me to dig through my parts, I'd forget even more about what I have.

 

I did find a note saying I bought the bolt from Phil Askew, a few TATA's ago.   (Now, who was driving on that trip...?)


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