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#1567289 - 12/04/19 02:12 PM
Re: Is it safe?
[Re: Bcmgunfighter]
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FrostyEOD
Registered: 10/07/12
Posts: 175
Loc: New Mexico
City or County: Moriarty
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#1567380 - 12/04/19 06:37 PM
Re: Is it safe?
[Re: FrostyEOD]
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Bcmgunfighter
Not all ARs are created equal...
Registered: 12/20/12
Posts: 3365
Loc: Virginia
City or County: Rochelle
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I hope so lol. Are you seeing all three pictures? I’m getting a question mark in a box where the second and third pictures should be. Thanks for the response
_________________________
Noveske 13.7” barrels VIS uppers Gen II lowers DD Lite Rail II 14
MY DO NOT DEAL LIST smilewhenIshoot - “There is zero evidence of voter fraud” Manwich23 - supports Chinese/US power grid JiveBunny Downhillshot Alwaystrading dcarms - ATF CUCK
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#1567667 - 12/05/19 03:11 PM
Re: Is it safe?
[Re: Bcmgunfighter]
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FrostyEOD
Registered: 10/07/12
Posts: 175
Loc: New Mexico
City or County: Moriarty
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I just see the first picture.
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#1567741 - 12/05/19 06:48 PM
Re: Is it safe?
[Re: Bcmgunfighter]
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MetroBluing
Always Lurking
Registered: 03/10/13
Posts: 333
Loc: Va
City or County: Loudoun
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Unless you are skilled at welding aluminum, I wouldn’t use it. Without the indexing slot you risk having the barrel spin and screw up the bolt timing, all bad. Gorilla grip on an upper never ends well. I have seen a few of these in the past. Bubba is alive and well.
Edited by MetroBluing (12/05/19 07:09 PM)
_________________________
Life is tough, but it's tougher when you're stupid. - John Wayne
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#1568207 - 12/07/19 06:15 AM
Re: Is it safe?
[Re: Bcmgunfighter]
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dustydog
drooling old single shot fanatic
Registered: 06/19/09
Posts: 2298
Loc: Chester
City or County: Chester
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Bit late in the thread,but the issue of the crack also should be of concern. A simple test we use for thin-wall parts suspected of having a crack: Clean part to bare metal with "extra fine" Scotchbrite Remove ALL grease and oil,acetone works well enough,wear gloves to avoid skin oil contamination Mix 50/50 acetone or alcohol with Dykem layout fluid Touch a q-tip soaked in the mix to the very beginning of the crack,capillary action will draw it into the crack and show how far it extends.
_________________________
"Why the H..l do they call it 'common sense'? I ain't seen much of it in my lifetime." R.L. "Junior" Byiers
Don't blame me if you find your life wanting,it takes sand to bet it all on one card.
Waiting for snow to cover my tracks.
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#1568427 - 12/07/19 02:27 PM
Re: Is it safe?
[Re: Bcmgunfighter]
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Bcmgunfighter
Not all ARs are created equal...
Registered: 12/20/12
Posts: 3365
Loc: Virginia
City or County: Rochelle
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I appreciate the comments everyone. Just to be clear, this was not an upper with a defect. That crack is there only because the previous owner beat the living daylights on the right side of the index notch. Pictures two and three WOULD have shown how it is flared out, hence the crack. Apologies for the second and third pictures not working. I’ll try to get them posted tomorrow. Stay tuned
_________________________
Noveske 13.7” barrels VIS uppers Gen II lowers DD Lite Rail II 14
MY DO NOT DEAL LIST smilewhenIshoot - “There is zero evidence of voter fraud” Manwich23 - supports Chinese/US power grid JiveBunny Downhillshot Alwaystrading dcarms - ATF CUCK
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#1568545 - 12/07/19 06:47 PM
Re: Is it safe?
[Re: Bcmgunfighter]
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dustydog
drooling old single shot fanatic
Registered: 06/19/09
Posts: 2298
Loc: Chester
City or County: Chester
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Looking at the picture around the 6:30 position,if that is the flare that seems to be under the blue line,you have a paperweight.The amount of weld/machine time to fix it would be prohibitive (cost>value),and would be a makeshift at best.
No, I've never stayed at a Hampton Inn,but I have been a machinist for forty years.
_________________________
"Why the H..l do they call it 'common sense'? I ain't seen much of it in my lifetime." R.L. "Junior" Byiers
Don't blame me if you find your life wanting,it takes sand to bet it all on one card.
Waiting for snow to cover my tracks.
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#1568910 - 12/08/19 08:03 PM
Re: Is it safe?
[Re: Bcmgunfighter]
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rromeo
Bullseye
Registered: 07/06/10
Posts: 1665
Loc: VA
City or County: Pulaski
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Is that a Colt 6940? I hope it works out for you
_________________________
Never initiate force against another. But should someone do violence to you, retaliate without hesitation, without reservation, without quarter, until you are sure that he will never wish to harm - or never be capable of harming - you or yours again.
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#1568929 - 12/08/19 09:00 PM
Re: Is it safe?
[Re: Bcmgunfighter]
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hino895
Addicted
Registered: 04/27/09
Posts: 530
Loc: Spotsylvania, Virginia
City or County: Downtown Thornburg
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Build it permanent. Loc-tite the barrel in place let it set up tighten the barrel nut.
_________________________
"It will be fine after the swelling go's down"
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#1568955 - 12/08/19 10:47 PM
Re: Is it safe?
[Re: hino895]
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dustydog
drooling old single shot fanatic
Registered: 06/19/09
Posts: 2298
Loc: Chester
City or County: Chester
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Build it permanent. Loc-tite the barrel in place let it set up tighten the barrel nut. Makeshift at best.The problem is the stresses at the root of the threads on a tubular structure.A crack and flare such as this exhibits will have half broken the threads at least down to the limits of the crack.Pushing pressure in such a situation will continue to break the threads at the root,sort of making a aluminum "slinky". IF YOU MUST HAVE THIS UPPER: Cut off the threads and thread for at least 1 diameter deep into the non threaded area. Make a threaded tube (alloy 316L stainless would work well) with a undersized bore(0.030 would be enough).Go for 80% thread. Fit the threaded tube to the upper dry,making sure the face matches the section bored and threaded. Lube with permanent locking compound,install tube.I'd also suggest a detente screw from the outside,around 8-32,engaging a dimple in the threads halfway down. Cut indexing notch,ream and then lap the inside diameter to size.Check for burrs,fit barrel. Edit:Wondering why I'm bothering when I have a general disdain for this type of rifle? Simple,firearms have bad enough press,don't want to watch the evening news and hear about a rifle failing at an indoor range.
Edited by dustydog (12/09/19 05:41 AM)
_________________________
"Why the H..l do they call it 'common sense'? I ain't seen much of it in my lifetime." R.L. "Junior" Byiers
Don't blame me if you find your life wanting,it takes sand to bet it all on one card.
Waiting for snow to cover my tracks.
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#1571496 - 12/15/19 02:53 PM
Re: Is it safe?
[Re: rromeo]
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Bcmgunfighter
Not all ARs are created equal...
Registered: 12/20/12
Posts: 3365
Loc: Virginia
City or County: Rochelle
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Is that a Colt 6940? I hope it works out for you This is actually a Noveske VIS 3... crazy hard to find. Thank you, sir!
_________________________
Noveske 13.7” barrels VIS uppers Gen II lowers DD Lite Rail II 14
MY DO NOT DEAL LIST smilewhenIshoot - “There is zero evidence of voter fraud” Manwich23 - supports Chinese/US power grid JiveBunny Downhillshot Alwaystrading dcarms - ATF CUCK
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#1572441 - 12/18/19 12:56 AM
Re: Is it safe?
[Re: Bcmgunfighter]
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ak66
Sharp Shooter
Registered: 06/20/17
Posts: 2304
Loc: VA
City or County: Fairfax
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I wonder if it will function properly, since there’s a chance the barrel will not sit properly or have minor movement when if flexes after firing a round. Will bolt even lock back properly if barrel extension is misaligned?
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Trade interests: - ATPIAL-C FDE - EXPS3-0 and G-33 magnifiers - Colt stripped M4 upper receiver - Comtac III or higher - Leupold MK4 spotting scope
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#1573896 - 12/22/19 06:09 AM
Re: Is it safe?
[Re: Bcmgunfighter]
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dustydog
drooling old single shot fanatic
Registered: 06/19/09
Posts: 2298
Loc: Chester
City or County: Chester
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Okay,the numbers were what I needed.I stand by my suggestion to make a repair coupling and install if you must have this upper.
OAL of threads: 0.45 OAL of crack (visible): 0.3565 (nice calipers!) TPI: 14 (approximate,would need to put a thread gauge on it)
You have no uncompromised threads.
The .22 LR,despite its "pipsqueak" status has the highest breech pressure (proportionally)of any commercial cartridge.Combine that with the hammer effect of a blowback action,it will fail,perhaps not cataclysmicly,but accuracy will degrade in the first few hundred rounds. I know that this was not what you hoped to hear,sorry.
Would hope that the person you dealt with has a sense of honor,and will refund your money.The cost of repair would exceed the value ,it's a single piece,and all the money would be tied up in the multiple setups to do the repair.
_________________________
"Why the H..l do they call it 'common sense'? I ain't seen much of it in my lifetime." R.L. "Junior" Byiers
Don't blame me if you find your life wanting,it takes sand to bet it all on one card.
Waiting for snow to cover my tracks.
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#1575500 - 12/27/19 10:42 AM
Re: Is it safe?
[Re: Bcmgunfighter]
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SWRichmond
Marksman
Registered: 04/11/10
Posts: 372
Loc: Central VA
City or County: Richmond
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I am not a gunsmith but I am an engineer.
Components are designed and manufactured to achieve results based on known strengths of materials, dimensions, etc. That piece is structurally compromised and there is absolutely no way I would ever attempt to use it as a firearm.
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