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Squeeze trigger with hand on grip safety, nothing, but...

2.3K views 11 replies 8 participants last post by  Spear of Mars  
#1 ·
My 1911 I am building is a Rock Island frame with Wilson Combat Beavertail grip safety, Wilson Combat Hammer, and Brownells A1 Mainspring housing. The rest is standard GI.

When I grip the frame properly and depress the grip safety, squeezing the trigger does not release the sear and the hammer does not move. If, I keep the palm of my hand away from the grip safety, squeeze the trigger, and then depress the grip safety, the sear releases and the hammer moves. I checked the mainspring and the profile is the same as another new on in another build kit.
Any ideas? This 1911 is not my first build.
 
#4 ·
Try this. Fully depress the grip safety so that it is bottomed out in the frame with your thumb. With the thumb safety off, press the trigger. If the hammer falls freely, I think the issue is that when in a firing grip, you are not fully depressing the GS. This can happen when you have a high grip on the pistol sometimes.

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#5 ·
Back off the overtravel screw of the trigger, or the trigger bow block under the GS arm needs to be moved back a little. By pressing first and then releasing the GS the energy is enough to over come.

LOG
 
#7 ·
Found the problem

I assembled the frame without the Grip safety and the trigger engauged the sear properly and the hammer dropped. I took a very close look at the grip safety and found a little bump that Wilson Combat QA missed and filed the bump off. The point of the file is pointing just below the flat surface that touches the trigger bow, where the bump was. Now the trigger works as it should. I need to go to the range and break in my 1911.
Image
 
#11 ·
I assembled the frame without the Grip safety and the trigger engauged the sear properly and the hammer dropped. I took a very close look at the grip safety and found a little bump that Wilson Combat QA missed and filed the bump off. The point of the file is pointing just below the flat surface that touches the trigger bow, where the bump was. Now the trigger works as it should. I need to go to the range and break in my 1911.
Image
Its a part that has to be fit so I don't think it's right thinking it's the fault of Wilson QA.

I'm with Bbbbill , the rack numbers add character. You can buy unmarked sets on ebay pretty cheap.

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#9 ·
Know a way to get the paint marker off the grips?
Those are plastic grips? There is paint stripper for plastic, but a can will cost more than a new set of grips, so that's a non-starter.

If you are feeling lucky, swab some brake kleen or gun scrubber on the back side of a panel. If it doesn't melt the plastic you can probably use it to remove the paint.

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