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#6343291 - 06/21/16 06:47 PM CMMG barrel but won't line up
BigPig Offline
THF Trophy Hunter

Registered: 08/27/09
Posts: 9478
Loc: Forney, Tx
Picked up a used CMMG MK3 a few months ago. Got her out today and noticed the FF handguard was a little loose. So I removed the flash hider, handguard, gas block and tube, and the handguard mount the goes over the barrel nut. Come to find out, the little wiggle is because the barrel but isn't properly torqued down and the barrel actually moves about 1/16-1/8 of an inch clockwise. No problem, grab AR 10 barrel nut wrench and torque wrench and torque to recommend amount. Oh but wait, now the holes for the gas tube don't line up, back barrel nut off until lined up and now barrel wiggles.

What gives?
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Originally Posted By: bill oxner
Ever spit it out rather than swallow it?

Originally Posted By: pegasaurus
Enjoy it while you can. One day you might be complaining about NOT getting random pop-ups in the morning. grin

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#6343298 - 06/21/16 06:53 PM Re: CMMG barrel but won't line up [Re: BigPig]
okie44 Online   content
Tracker

Registered: 04/11/11
Posts: 612
Loc: Midland TX.


Edited by okie44 (06/21/16 06:55 PM)
Edit Reason: Added link
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“The trouble ain't that there is too many fools, but that the lightning ain't distributed right.”
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#6343336 - 06/21/16 07:25 PM Re: CMMG barrel but won't line up [Re: BigPig]
TexFlip Online   content
THF Trophy Hunter

Registered: 08/18/12
Posts: 8633
Loc: Harris County
Shims indeed.
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#6343347 - 06/21/16 07:30 PM Re: CMMG barrel but won't line up [Re: BigPig]
BigPig Offline
THF Trophy Hunter

Registered: 08/27/09
Posts: 9478
Loc: Forney, Tx
Never needed those before. Thanks guys
_________________________
Originally Posted By: bill oxner
Ever spit it out rather than swallow it?

Originally Posted By: pegasaurus
Enjoy it while you can. One day you might be complaining about NOT getting random pop-ups in the morning. grin

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#6343374 - 06/21/16 07:57 PM Re: CMMG barrel but won't line up [Re: BigPig]
KRoyal Online   sleepy
THF Celebrity

Registered: 01/24/07
Posts: 13622
Loc: Sherman/North of Dallas
I'm telling ya, get the MK3 RKM15 you'll be happier grin
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#6343462 - 06/21/16 09:04 PM Re: CMMG barrel but won't line up [Re: KRoyal]
BigPig Offline
THF Trophy Hunter

Registered: 08/27/09
Posts: 9478
Loc: Forney, Tx
Originally Posted By: KRoyal
I'm telling ya, get the MK3 RKM15 you'll be happier grin


Want to trade? I've got almost nothing in this gun so in not going to give up yet
_________________________
Originally Posted By: bill oxner
Ever spit it out rather than swallow it?

Originally Posted By: pegasaurus
Enjoy it while you can. One day you might be complaining about NOT getting random pop-ups in the morning. grin

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#6343469 - 06/21/16 09:10 PM Re: CMMG barrel but won't line up [Re: BigPig]
KRoyal Online   sleepy
THF Celebrity

Registered: 01/24/07
Posts: 13622
Loc: Sherman/North of Dallas
Lol I'm talking about the rail the MK3 RKM15 is the cmmg LR308 (MK3) 15 inch rail. Way better barrel nut design and easy on and off.
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#6343506 - 06/21/16 09:39 PM Re: CMMG barrel but won't line up [Re: BigPig]
BigPig Offline
THF Trophy Hunter

Registered: 08/27/09
Posts: 9478
Loc: Forney, Tx
Oh gotcha. Yeah I was trying make what came on it work. We shall see
_________________________
Originally Posted By: bill oxner
Ever spit it out rather than swallow it?

Originally Posted By: pegasaurus
Enjoy it while you can. One day you might be complaining about NOT getting random pop-ups in the morning. grin

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#6343508 - 06/21/16 09:40 PM Re: CMMG barrel but won't line up [Re: BigPig]
KRoyal Online   sleepy
THF Celebrity

Registered: 01/24/07
Posts: 13622
Loc: Sherman/North of Dallas
Yea those timing shims will work for you up
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Rapid Design Lab

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#6345742 - 06/23/16 09:02 PM Re: CMMG barrel but won't line up [Re: BigPig]
Big Fitz Online   content
Veteran Tracker

Registered: 12/06/09
Posts: 2008
Loc: McKinney, TX
I give BP a perfectly good AR10 and now it is all boogered up? bang Some people just like to break stuff... peep
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Originally Posted By: syncerus
I prefer to think of myself as a control enthusiast. wink

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#6345754 - 06/23/16 09:08 PM Re: CMMG barrel but won't line up [Re: Big Fitz]
BigPig Offline
THF Trophy Hunter

Registered: 08/27/09
Posts: 9478
Loc: Forney, Tx
Originally Posted By: Big Fitz
I give BP a perfectly good AR10 and now it is all boogered up? bang Some people just like to break stuff... peep


Lol. I haven't even shot the thing, it's been sitting in the safe until the other day.
_________________________
Originally Posted By: bill oxner
Ever spit it out rather than swallow it?

Originally Posted By: pegasaurus
Enjoy it while you can. One day you might be complaining about NOT getting random pop-ups in the morning. grin

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