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  #1  
Old 06-23-2021, 12:34 PM
.30 Carbine .30 Carbine is offline
 
Join Date: Oct 2009
Location: Northern Virginia
Posts: 431
Default Firing Pin Stop Slid Down

Today at the range my CMP Colt 1911A1 firing pin stop slid down while shooting, blocking the slide from sliding back all the way. This happened 1/2 way through the second magazine for the day.

Any suggestions on the cause and what should be done? Should I replace the firing pin spring? Firing Pin? Firing pin stop? Or, just keep shooting until it happens again?

I assume it was previously reassembled correctly since it happened on the second magazine and not the first shot from the first magazine.

Thanks!

.30 Carbine
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  #2  
Old 06-23-2021, 02:35 PM
guncotton guncotton is offline
 
Join Date: Oct 2009
Location: Virginia
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First guess is a weak spring and or crud in the channel. Clean it out and then judge the spring tension. Maybe consult CMP armorer for parts recommendation or buy a spring from Brownells or some such place.
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Old 06-23-2021, 03:28 PM
.30 Carbine .30 Carbine is offline
 
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Location: Northern Virginia
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Thanks Guncotton, I cleaned out the channel with a pipe cleaner. I will continue shooting/testing for further issues, I ordered two of the Wolff springs to install the next time there is an issue.

.30 Carbine


Quote:
Originally Posted by guncotton View Post
First guess is a weak spring and or crud in the channel. Clean it out and then judge the spring tension. Maybe consult CMP armorer for parts recommendation or buy a spring from Brownells or some such place.
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  #4  
Old 06-24-2021, 08:11 AM
chowdude chowdude is offline
 
Join Date: Aug 2016
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I had a similar issue with my RIA 1911 and a new firing pin spring fixed it
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  #5  
Old 06-25-2021, 12:26 PM
.30 Carbine .30 Carbine is offline
 
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Quote:
Originally Posted by chowdude View Post
I had a similar issue with my RIA 1911 and a new firing pin spring fixed it
Thanks for the info. Any suggestion on spring strength? Wolff has standard, extra and extra extra power?

.30 Carbine
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  #7  
Old 06-27-2021, 11:11 AM
jwenum jwenum is offline
 
Join Date: Feb 2013
Location: N.E. Ohio
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You could also have a slightly undersize FPStop also. They are usually just a snug fit. New spring would be easiest 1st try tho. Standard or extra should be fine, "extra extra" nope.
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