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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; Originally Posted by jmalerba I'm done for tonight. I'm looking to get the right tools to get this thing out properly. Smart move friend, you ...


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Old March 12th, 2017, 03:33 PM   #31
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I'm done for tonight. I'm looking to get the right tools to get this thing out properly.
Smart move friend, you are very close to having a awesome rifle. Step back look away and regroup. You will succeed.

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Old March 12th, 2017, 05:09 PM   #32
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Originally Posted by jmalerba View Post
I'm done for tonight. I'm looking to get the right tools to get this thing out properly.
I was in New York on Friday, probably only a few miles from you. I wish I could take care of this for you, but normally I'm down in Princeton.

You're probably only about an hour from the LRB shop. You can always put your tail between your legs and stop in.

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Old March 12th, 2017, 06:26 PM   #33
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I'm not that discouraged. Yet. My plan is to doctor a 3/64 drill bit removing the tail from the cutting end. I'll try to drive that through the front boss with the flat sided punch. Let me know if you think that's a sound idea.

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Old March 12th, 2017, 06:54 PM   #34
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I'm not that discouraged. Yet. My plan is to doctor a 3/64 drill bit removing the tail from the cutting end. I'll try to drive that through the front boss with the flat sided punch. Let me know if you think that's a sound idea.
That's what I would start with. Soak everything with CLP the night before.

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Old March 12th, 2017, 07:00 PM   #35
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Will Kroil work?

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Old March 12th, 2017, 07:33 PM   #36
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Yep

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Old March 13th, 2017, 06:04 PM   #37
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Well I had a thought about what you could do. Take a look at possibly drilling out the pin. You can get what was at one time called a gun drill, its just a very long drill bit. Using one of those and a drill bushing to help with alignment you might be able to drill it out from the opposite side. Or just drill it out from the exposed side hopefully removing enough material to then then just punch it out or it would just break apart.

Just an idea.

Here are a few links for you to take a look at. Might give you some ideas as well.

Extended-Reach Drill Bits
Short-Flute Extended-Reach Drill Bits
Press-Fit Drill Bushings with Head

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Old March 13th, 2017, 06:48 PM   #38
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I'm not that discouraged. Yet. My plan is to doctor a 3/64 drill bit removing the tail from the cutting end. I'll try to drive that through the front boss with the flat sided punch. Let me know if you think that's a sound idea.
Drill bits shatter and break pretty easily. I would try to use a piece of allen wrench instead.

If/when you get it out, do not try to drive a new one in w/o trying the fit and sanding it down in a drill as advised. It does not have to be super tight fit.

Some receivers do not have much of a opening on the front side - how's yours?

Yahoo

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Old March 13th, 2017, 08:32 PM   #39
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I'd probably put the receiver in my deep freezer overnight and get the metals to contract. a bit. The rifle is designed to work in harsh conditions. I'm sure a little cold wont bother it. It will think about its big daddy in the Ardennes

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Old March 13th, 2017, 08:48 PM   #40
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What about heating the ear a bit?
Negative. Heat would cause expansion of the metal. Prolonged heat can cause the metal to soften and lose it''s heat treat. Metal around the bolt stop bosses is relatively thin. It's hard to get the heat treatment correct in this area. Many receivers are brittle around the bosses.

Freezer would be better.

However caution and patience are the best advice now.

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Old March 14th, 2017, 05:11 AM   #41
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Originally Posted by jmalerba View Post
I'm not that discouraged. Yet. My plan is to doctor a 3/64 drill bit removing the tail from the cutting end. I'll try to drive that through the front boss with the flat sided punch. Let me know if you think that's a sound idea.
The bit may break off and you'll have a bigger issue. Most are hardened and brittle, and you will then need to shatter the bit to get it out.

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Old March 14th, 2017, 05:14 AM   #42
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I had this happen a while back. I used a Dremel between the right side of the bolt stop and ear, cut the pin, yank out bolt stop, and then remove small pieces off pin in the ear(s)

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Old March 14th, 2017, 05:55 AM   #43
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Jim,

If you've let everything soak in Kroil or CLP, have you tried pivoting the bolt stop? If it will pivot a bit on the broken roll pin, that is good news.

There is usually a bit of fore and aft play with a bolt stop, between the ears. Do you have any clearance in front of the bolt stop, or is it wedged against the front ear?

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Old March 14th, 2017, 06:25 AM   #44
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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.
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Thanks from nf1e and mic52

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Old March 14th, 2017, 06:12 PM   #45
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Please keep us updated.

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