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How to checking firing pin protrusion on an MRC 1999?
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How does one drop the firing pin with the bolt out of the gun?

I read that some of the early ones had a problem with protrusion and want to check the actions I still have.

Is the process the same as for a M70?


Thanks, Rob
 
Posts: 1694 | Location: East Coast | Registered: 06 January 2003Reply With Quote
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With bolt removesd from gun and pointed forward and bolt knob to the right ( like it was in the receiver but you havn't closed the bolt yet) Push the silver button located at ten o clock on the shroud and rotate the shroud to the left. The firing pin tip is now protruded and able to be measured with a depth micrometer or caliper. Mine goes .061. I assume this is the same as with M70's. You'll need to reverse the process to reassemble.


Jay Kolbe
 
Posts: 767 | Location: Seeley Lake Montana | Registered: 17 April 2002Reply With Quote
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Snowcat,
Got around to checking this with a caliper and came away with around .045 on two of them and .051 on the third. Sounds a little short doesn't it?

Rob
 
Posts: 1694 | Location: East Coast | Registered: 06 January 2003Reply With Quote
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.040 to .060 is correct for all types to the best of my knowledge
 
Posts: 497 | Location: PA | Registered: 24 May 2005Reply With Quote
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.060“ to .065â€, leaning more toward the shorter, is what is recommended by most manufacturers. .040†is a bit short for reliable ignition.
 
Posts: 4574 | Location: Valencia, California | Registered: 16 March 2005Reply With Quote
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Sorry, had to go back and edit my post after I saw I left the zeros out. .60†would be a wee-bit too long! Smiler
 
Posts: 4574 | Location: Valencia, California | Registered: 16 March 2005Reply With Quote
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