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Posted: 1/23/2017 6:56:07 PM EDT
So i am building my first precision ar15, and I seem to have underestimated this. Straight to the issue: My Stainless Steel barrel is now stuck in the receiver, but not where it should be. I applied heat, made sure the barrel was cold, placed it in and I missed the notch! Oops. Now its clamped on to the barrel and won't budge. How do I get my barrel out to try again!? Thanks for the help.
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Warm up the receiver and give the barrel one good tap to pop it loose.
Aluminum has a lot better thermal conductivity than steel does. It should expand, and the barrel should come out. I haven't dealt with any barrel to receiver connections this tight, but it should work nonetheless. I've dealt with a lot of other "things" stuck together, though. |
| Not to derail the subject but are you using those clamps that just hold the receiver by the lugs? If so those are not really good to use when torqueing the barrel nut down as they put all the stress on the lugs. Quite a few receivers have been damaged with those. |
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Quoted:
Not to derail the subject but are you using those clamps that just hold the receiver by the lugs? If so those are not really good to use when torqueing the barrel nut down as they put all the stress on the lugs. Quite a few receivers have been damaged with those. Good to know, thanks. |
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Quoted:
Clamp the barrel in a vice, take a wooden block and lay it along side the pic rail on the upper longways. Smack the wooden block to rotate the receiver until the notch is lined up. This. I'd bet a gunsmithing hammer with a polymer strike face could easily knock the upper into alignment if you vise up the barrel. |
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This takes a little finesse. put barrel n upper in deep freeze for 30 minutes.......Pull out, put in clamp.......use one of those hand held butane low heat torches.....move all around the upper receiver gripping surfaces.......till it warms to the touch..........pop it with a large wooden dowel and hammer on the inside of barrel. It must be warmed up quickly so the heat doesn't pass to the barrel.
If that doesn't work after a few hits...........back off. get some break free and soak it over night n try the big dowel and hammer again. Seriously, if the upper is that tight on the barrel..........it wouldn't work so good anyways. Might consider using 600 grit emery cloth on the barrel........lightly. Barrel is supposed to be snug but jeez not metal binding tight. Good luck..........keep us updated |
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