Possible 1911 mainspring issue and fix

[luckey]

Hi Guys,

On my SR1911, during routine cleaning and safety test, I just noticed the grip safety has intermittent issues. Without touching the grip safety, if I keep pulling the trigger multiple times, it WILL go off after random numbers of pulls, usually it's more than 5 pulls, but no way to be absolutely sure, so far 5 times minimum and as much as 10 pulls. Do you experience this at all? Anything else with the gun is fine. If I hold the beaver tail part of the safety upwards in position and try to pull the trigger, the problem goes away. So, I think it might be the mainspring or the sear spring issue? should I replace the mainspring or just adjust the searspring a little bit? Thanks.

 

[T&G]

Sounds like the repeated trigger pulls are walking the grip safety blocking lever down until it disengages. Cure it by bending the grip safety leaf (the one on the right or Palm side) more to the rear. There should be a solid positive push by the grip safety against the spring when disengaging.

 

[NAA]

There used to be a book, long out of print, called 'Hallock's .45 Handbook" that had a true to scale side profile of that 3 leaf spring with it's correct 'bends'. All you had to do was eye ball the profile of your real spring to that picture, put in the correct 'bend' on each leaf & you were 'good to go' on reassembly.

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NAA.

 

[luckey]

thanks for the suggestion. also watched some youtube video and tried to adjust the sear spring, bending the one on the very right that is responsible for the grip safety. still no dice. the pattern changed, but still random and still goes off unpredictably.

 

[luckey]

Never mind. fixed. it's the typical sear spring issue and the fix is to bend it to the right amount. I was too gentle because it's my very first gunsmithing and just got my pal a few months ago.
To do it right, instead of using a screwdrive to pry it, I use a needle nose plier to bend it more. now the grip safety is no longer rattle and works 100%. With up to 50 trigger pulls continuously, it holds up.

Thanks again for your inputs on helping me fix the issue. Gunnutz rocks!

thanks for the suggestion. also watched some youtube video and tried to adjust the sear spring, bending the one on the very right that is responsible for the grip safety. still no dice. the pattern changed, but still random and still goes off unpredictably.