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This is a discussion on AR15 builders! within the Gun Projects forums, part of the Gun Forum category; Okay, so I've decided to take on the building route. I've been offered some DPMS 5.56x45 barrels, that closes on a no go and go ...


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Old 07-30-2016, 02:10 PM   #1
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AR15 builders!

Okay, so I've decided to take on the building route. I've been offered some DPMS 5.56x45 barrels, that closes on a no go and go gauge, but doesn't on a field gauge. I was told DPMS does this on purpose.

Any truth to this, should I take it? Only $75, and it's chrome lined. Brand spanking new, very strong bore, 1 in 8 twist.

How many rounds should I expect from it?
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Old 07-30-2016, 04:07 PM   #2
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agumon12, I don't think anyone in business would do this on purpose. Being chrome lined means you can not alter the chamber, the only way to alter headspace is to find an "Oversize" bolt. The truth is no one I am aware of sells an "Oversize" bolt. Different manufactures and their tolerances vary enough, that it's possible you could find a bolt, that would bring the headspace within acceptable limits. The only way I would use this, is if I could find a bolt that would only close on a Go headspace Gauge, and not a No Go.
That could entail a lot of bolts, to go through.

If you have $75 to possibly waste, get one. Then get a set of GO, NOGO gauges, and head to a big gun show. Hope you can find a vendor that will let you go through the collection of bolts they brought, and pray that you find one that closes on the GO, but not the NOGO.
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Old 07-31-2016, 04:40 AM   #3
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Don't do it, no sense risking your health for a few bucks. There are plenty of good barrels available for just a bit more money. Look at the offerings from Ballistic Advantage;
5.56 Nato Barrels | Ballistic Advantage
And Faxon;
Barrels - AR-15 - 5.56 NATO / .223 Remington 1 - Faxon Firearms
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Old 08-02-2016, 07:41 AM   #4
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agumon12, I don't know what you decided to do, but just for your information, there are reasonable deals you can come across once in a while.
I have been fortunate a couple of times over the past few years, at local gun shows. Both instances, involved the same dealer, but about 4-5 years apart. This vendor had FN M16 barrel assemblies, that were rejects due to offset front sights pinned to the barrels. The first one was an M16A1 chrome lined 1:12" twist "pencil" barrel, and the second was an M16A2 chrome lined 1:7" twist barrel. Since I was looking for barrels both times for flat top uppers, I didn't need the sights, so I "shaved" the "A-frame" off, and have scopes mounted on them. They aren't tack drivers, by any means, but they maintain better than 2 MOA accuracy, with premium ammunition. They cost me less than $100 a piece.

The A1 barreled upper has a Millett DMS, 1-4x 24mm scope, and the A2 barreled upper has a Weaver 3-10x 40mm scope.
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Old 09-15-2016, 07:02 PM   #5
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I fully agree with Jtallen83.
Keep looking for another deal.
The risk financially though small and
seemingly negligible cannot justify any battery failures, FTF,
accidents to shooters and/or physical harm.
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