[ARCHIVED THREAD] - Roll pins

Posted: 7/30/2012 6:33:37 AM EDT

I am currently gathering parts for my first complete build. In the past I only built lowers and mated them up to assembled uppers.

This time after gathing all the parts I going to assemble the whole carbine.

A problem I had in the past were the roll pins. I dinged up a lower previously while trying to get the bolt catch roll pin in. I had to eventually get a jewlers file and slim it down to get it in.

So a thought I had this morning at work. Why not put the roll pins in the freezer, they should compress in size and try to get them into place when they are still frozen?

Anyone try this at all?

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Posted: 7/30/2012 7:02:23 AM EDT

[#1]

you might need liquid nitrogen, i pretty sure the freezer is cold enough. I could be wrong

buy one of those do it yourself wart freezing kits

Posted: 7/30/2012 7:30:00 AM EDT

[#2]

Why not polish the pins, chamfer the leading edge, use Tetra grease as a lube and the right tools to install them?

Posted: 7/30/2012 9:30:29 AM EDT

[#3]

Right size pins + right tools = no problems.
Roll pin holder punch to start pin.
Regular roll pin punch to finish.
They make a punch with one side milled down to remove the bolt catch roll pin.
A little lube does not hurt.

Posted: 7/30/2012 2:35:28 PM EDT

[#4]

Crimp one side of the roll pin slightly to get them started, put some synthetic oil on them, then use some vice grips with tape to push them in.

This is how I did it and they went in like butter.

[ARCHIVED THREAD] - Roll pins

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[ARCHIVED THREAD] - Roll pins

[ARCHIVED THREAD] - Roll pins