12-20-2014, 06:13 PM
Wheelhorse Wrote:I haven't assembled as many as most of you guys, but have yet to find a barrel extension loose. Does this really happen? Seems to me that might be a issue for the company that made the barrel to resolve.
I remembered something else. The Brownells tool was out of stock when I was looking for one so I bought the Wheeler kit. It came with what seemed to be a water based abrasive. I had a can of this on hand http://www.use-enco.com/CGI/INSRIT?PARTP...A=391-5874.
It is grease based and I thought it might stay in place better, so that is what I used. I surely didn't want any of this migrating down in the receiver while lapping.
I don't understand how these receiver faces get off as they do. The only one I've found really bad, was on the carbine bought from the gun show.
I owned a Colt H Bar 25 years ago on which the rear sight had to be moved all the way over to get it zeroed. That gun was sent back to Colt because of it. They said it was "in spec" and refused to do anything about it. I don't know that was the problem, but I sure would like to have it back now. I would find out.
WH,
When he said the barrel extension was loose, he meant the fit was loose to the upper. Not that the extension was loose on the barrel. As LRRPF52 said, you can bed the extension to the upper by using Blue Loc-tite. Just remember you'll have to heat with a heat gun in order to remove the barrel from the upper, if you ever have too. Don't use a torch as you can easily overheat and ruin the Rc hardness of the Al upper.