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Bolt Stop Roll Pin Broken - Help!

This is a discussion on Bolt Stop Roll Pin Broken - Help! within the The M14 forums, part of the M14 M1A Forum category; As guys already stated you did the RIGHT THING by taking a break from this. I wish I had. I cracked the front of the ...


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Old March 15th, 2017, 05:51 PM   #46
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As guys already stated you did the RIGHT THING by taking a break from this. I wish I had. I cracked the front of the stop of a brand new receiver even using most of the steps mentioned here. On the next build I'm going to open the outside of the pin channel a bit. It was a VERY expensive lesson. And I have a $800.00 paper weight to remind me. It's been over a year already and still makes me crazy. Push comes to shove you can take it to a machine shop as I was told "...why didn't you call me... I could have..." by a machinist in my KofC Council. Out of all the parts/steps on a build this one seems to give alot of guys fits though some using the advice here seem to get through it fine. I just wasn't one of 'em. Don't be like ME. Or like Kurt said LRB isn't all that far from Stamford (if you feel a disaster is imminent like mine) down 95 over the Throgs Neck or Whitestone to Floral Park on the Queens/Nassau line. I stopped by for the first time when I was up seeing family last summer. All good people there and they could probably do it in minutes.

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Last edited by mic52; March 15th, 2017 at 06:38 PM.
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Old March 15th, 2017, 06:58 PM   #47
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jmalerba, I had installed a pin and the bolt stop hole was not lined up properly resulting in the pin "mushrooming" against the stop. After having tried several of the methods mentioned in previous replies. I heavily taped the side of my receiver. This is a demill so I only put painters tape. As I mentioned in my last reply, painters tape then a couple layers of duct tape.
Ok, by now all your attempts will have distorted your pin anyway. I bent my pin 90 degrees. Do it easy so pin doesn't snap. Then I locked my vise grips perpendicular to the receiver and gently rotated the pin back and forth. This didn't get the pin out, but it did loosen it a tad. Then I set the vise grips parallel to the receiver and gently tapped on the vise grips and pin came out. Important to have the receiver immobilized either in a vise or clamped to work bench. I did NOT have to go guerrilla tapping, easy firm taps like an auto body man working with a dolly and hammer. And as kurt and others have said, oil IS your friend. Good luck.
I had the same problem you are having with my Bula build. This is exactly how I finally removed the bad pin.

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Old March 16th, 2017, 06:29 AM   #48
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jmalerba, please do not attempt to drill the pin out from the front or back. The pins are hardened. The larger looming problem is the pin hole radius center is intersected in the front boss hole by the left receiver wall, or scope mount wall.

It is not a through hole. You must look at the prints to see this. If you drill from the front you will only succeed in drilling at an angle, ruining the hole by egging it out and making it loose in the boss and the bolt stop.

If you will send it to my shop, I will fix it for you, providing you don't have any luck and don't gnarl up the pin anymore. No charge, just return shipping cost is all I ask.......rip

 
 
Old March 17th, 2017, 05:33 PM   #49
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Sorry for not updating. I was jammed up at work all week.

So the good news first. Both ears are still intact. Unfortunately, that's all I have for good news.

I also should've checked in here first, because as Ripsaw predicted, I broke off two drill bits coming from the front and now they too are stuck.

I've given up trying to remove this on my own. I don't want a pricey paperweight.

I'm going to have to take it to LRB. This sucks, but I suppose it could've been worse.

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Old March 17th, 2017, 05:46 PM   #50
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Another slight positive. I wasn't drilling from the front, but trying to punch in the tail of a drill bit so hopefully no egging. I still suck though.

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Old March 17th, 2017, 06:49 PM   #51
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Another slight positive. I wasn't drilling from the front, but trying to punch in the tail of a drill bit so hopefully no egging. I still suck though.
Hopefully LRB can get you the bit and pin out for you.
Nothing is certain after a point.

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Old March 17th, 2017, 07:26 PM   #52
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I'm hoping worst case scenario is to cut in between the bolt stop and the ears on both sides.

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Old March 17th, 2017, 09:22 PM   #53
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Is this fixable?

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Old March 18th, 2017, 02:57 AM   #54
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I am sure the folks at LRB can help you out.
I liked the good news part.
Chalk it up to a learning experience.

Semper Fi
Art

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Old March 18th, 2017, 05:23 AM   #55
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Is this fixable?
As Art said, yeah, I would think LRB will take care of you. And while you're there,maybe ask them to install a new bolt stop, they will have the right tools for the job. Heck, maybe even install your barrel and headspace your bolt. Make the day of it and see what all they can teach you in the way of tricks of the trade that you can bring back to us.. Good luck,, and please continue to update us. Can't wait to see your finished product.

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Old March 18th, 2017, 06:00 AM   #56
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As Art said, yeah, I would think LRB will take care of you. And while you're there,maybe ask them to install a new bolt stop, they will have the right tools for the job. Heck, maybe even install your barrel and headspace your bolt. Make the day of it and see what all they can teach you in the way of tricks of the trade that you can bring back to us.. Good luck,, and please continue to update us. Can't wait to see your finished product.
This^^^^^ have them install your barrel and headspace your bolt.
Then your home free.

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Old March 18th, 2017, 06:00 AM   #57
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I'm hoping worst case scenario is to cut in between the bolt stop and the ears on both sides.
My old Armscorp had a worn out stop, so I replaced it last week. After taping it up, I attempted to drive it out with a small hammer and punch, I found that driving it out was not going to work, so after even more taping of the receiver, I used a hack saw to cut the pin. As soon as the pin was cut and the stop was out, I then had no problem knocking out the remainder of the pin that was still lodged inside the two bosses.

When I install a pin, I reduce the diameter of the pin about 1/3 of the length with a small hand file, then the installation of the pin and stop isn't a problem.

Keep in mind the old Armscorp is cast and probably easier to break than your LRB.

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