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Trigger Pin Issue

This is a discussion on Trigger Pin Issue within the The M14 forums, part of the M14 M1A Forum category; In the processor replacing my commercial hammer spring with a Tubbs one, and upon reassembly, the damn trigger pin wont drop back in. Usually you ...


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Old May 6th, 2015, 06:49 PM   #1
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Trigger Pin Issue

In the processor replacing my commercial hammer spring with a Tubbs one, and upon reassembly, the damn trigger pin wont drop back in. Usually you just wiggle the trigger and the tapered end of the trigger pin drops right in on its own. Now, I don't even know how to disengage the hammer to start back over. Any suggestions?

I've referenced tony's vid many times now and don't see where I went wrong.

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Old May 6th, 2015, 06:55 PM   #2
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I used a small pin punch thru the back of the trigger housing pin hole to help me align the hole so I could drop in one of the tool steel pins I bought from Art (ShootingSight) for my SM. You might be able to pivot the trigger on the pin enough to enable you the pin back out the trigger housing and start over. The pin punch helped me to keep it aligned enough to get the pin into place & not bend the pin in the process.

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Old May 6th, 2015, 06:56 PM   #3
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Quote:
Originally Posted by AzMedic View Post
I used a small pin punch thru the back of the trigger housing pin hole to help me align the hole so I could drop in one of the tool steel pins I bought from Art (ShootingSight) for my SM. You might be able to pivot the trigger on the pin enough to enable you the pin back out the trigger housing and start over. The pin punch help me keep it aligned enough to get the pin into place & not bend the pin in the process.
Well now I'm worried that I bent the trigger pin but again, don't see how I would've pulled that off

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Old May 6th, 2015, 07:04 PM   #4
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Well now I'm worried that I bent the trigger pin but again, don't see how I would've pulled that off
I learned the hard way, I don't know how I did it (guessing not enough thumb pressure on the trigger/hammer spring to keep it compressed), but I bent mine enough that when I rolled it on a piece of glass (head over the edge of the glass) you could see & hear a small 'tick' as I rolled it along. I had a spare M1 pin that I put in until I got the steel pin from Art...those are a work of art (no pun intended) and worth the $25 for the trigger/hammer pin set.
just my $0.02 worth and from an FNG no less...

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Old May 6th, 2015, 07:06 PM   #5
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Originally Posted by AzMedic View Post
I learned the hard way, I don't know how I did it (guessing not enough thumb pressure on the trigger/hammer spring to keep it compressed), but I bent mine enough that when I rolled it on a piece of glass (head over the edge of the glass) you could see & hear a small 'tick' as I rolled it along. I had a spare M1 pin that I put in until I got the steel pin from Art...those are a work of art (no pun intended) and worth the $25 for the trigger/hammer pin set.
just my $0.02 worth and from an FNG no less...
Just ran the body of the trigger pin through the flat surfaces of my digital calipers. when pull it out of the calipers, I could feel a slight resistance at one point. I'm guessing somehow I bent it while removing it with the punch? Idk how else I would've pulled that off.

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Old May 6th, 2015, 07:10 PM   #6
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Just ran the body of the trigger pin through the flat surfaces of my digital calipers. when pull it out of the calipers, I could feel a slight resistance at one point. I'm guessing somehow I bent it while removing it with the punch? Idk how else I would've pulled that off.
try the piece of glass or steel straight edge to see if it is bent - I was able to get mine out without it hanging up, but it hung up going in and I had to reseat my thumb to press harder on the spring assembly and think that's how I bent mine. Using the pin punch enabled me to line up the hole and position my fingers enough to maintain pressure on the hammerspring assembly to drop in the pin.

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Old May 6th, 2015, 07:13 PM   #7
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try the piece of glass or steel straight edge to see if it is bent - I was able to get mine out without it hanging up, but it hung up going in and I had to reseat my thumb to press harder on the spring assembly and think that's how I bent mine. Using the pin punch enabled me to line up the hole and position my fingers enough to maintain pressure on the hammerspring assembly to drop in the pin.
I tried using a punch to align the hole then tap the pin in forcing the punch out of the other side. You can't see it, but I'm sure at this point its bent. Already ordered a replacement and spare. Had to make an order at brownells anyway.

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Old May 6th, 2015, 07:17 PM   #8
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Any idea how I can disengage the hammer without the trigger pin in?

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Old May 6th, 2015, 07:22 PM   #9
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Any idea how I can disengage the hammer without the trigger pin in?
only thing I can think of is using the pin punch as pin pivot replacement to enable you to pull the trigger to trip the sear to release the hammer assembly. other idea would be to attempt to drift out the thicker hammer pin but that could be damaged in the process along with other parts (safety glasses)....maybe Tony Ben or one of the senior members can chime in...

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Old May 6th, 2015, 07:26 PM   #10
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Use a Irwin clamp, just like you are trying to clamp 2 pieces of wood together. use the clamp and squeez the hammer against the front of the trigger housing.

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Old May 6th, 2015, 07:27 PM   #11
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Tony Ben Video - Trigger Group


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Old May 6th, 2015, 10:18 PM   #12
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It sucks if you pop the pin with the hammer cocked. Use a vise to squeeze the trigger so you can reinsert the pin.

The other I have never tried is to remove the hammer pin while cocked. Not sure if it will work.

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Old May 6th, 2015, 10:42 PM   #13
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It sucks if you pop the pin with the hammer cocked. Use a vise to squeeze the trigger so you can reinsert the pin.

The other I have never tried is to remove the hammer pin while cocked. Not sure if it will work.
Did what AZ said...used a punch as a makeshift pin to disengage the hammer. Still don't see how the pin got bent while removing/inserting?

Been reading up, and it could also be that I have a POS commercial housing.

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Old May 6th, 2015, 11:48 PM   #14
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Quote:
Originally Posted by flipmasterj View Post
Did what AZ said...used a punch as a makeshift pin to disengage the hammer. Still don't see how the pin got bent while removing/inserting?

Been reading up, and it could also be that I have a POS commercial housing.

Flipmaster, do you need a new trigger pin? If so, PM me. I have an extra I will give you if you need it."USGI".

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Old May 7th, 2015, 08:47 AM   #15
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I find that it is easier, and less troublesome to just put the second joint of my index finger on the back of the disconnector and my thumb on the front of the housing and pinch. No vice or clamps necessary. Also, you can shift pressure with your finger and move the trigger hole up or down slightly.

The pin just drops in.

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