I have a 7" AR and it has a heavy (way too heavy if you as me) barrel. I was thinking about having it turned down to a standard type barrel to save on weight, I'm guessing it wouldn't hurt anything.
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June 7, 2012, 01:06 AM
June 7, 2012, 07:44 AM
Just make sure the gas block location stays how it is or gets turned to .750 and there should be no problems at all.
June 7, 2012, 07:53 AM
Would having it "turned down" be cheaper than buying a new 7" lighter barrel?
June 7, 2012, 08:12 AM
You could have it turned down but a new barrel would cost about the same. I doubt you would save more than 6oz either way.
June 7, 2012, 08:53 AM
Adco charges $65 to recontour behind the FSB or in front of the FSB.
To do the whole barrel is $130.
A White Oak Armament 7.5" barrel costs $260.
June 7, 2012, 07:48 PM
So far the only 7" barrels I have seen were heavy barrels, just looking to shave off some weight. 1/2 pound sounds like a good bit. A friend of mine has a lathe and I am thinking about letting him turn it down then coating the bare metal.
June 7, 2012, 10:05 PM
I turned down my mid length barrel, so I say go for it.
I just cold blued it. I just have plastic HG and everyone in a while put a light coat of oil on it. Its been a few years and no problems.
June 11, 2012, 07:13 PM
Yesterday we chucked the barrel into the lathe and turned it down. I didn't think to weigh it but I can tell it helped. Threw on a few coats of cold blue and opened up the gas port a little (very little) and put it back together. First test was done on an M16-A1 lower and it dumped a couple magazines with ease. Then I put it on it's registered lower an ran a magazine through it with no problems. Before I opened the gas port it wouldn't run full auto. I really like this little rifle even though it's loud as hell and it tries to set the world on fire from it's muzzle flash!