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#6320395 - 06/02/16 06:06 PM Anybody use a Joe Bob Outfitter's adjustable gas block?
LFD2037 Online   happy
THF Trophy Hunter

Registered: 11/05/08
Posts: 7414
Loc: TEXAS
Installed mine on my AR .308 today. As soon as I installed it, I realized the set screw, to lock the adjustment screw in place, isn't accessible if it's installed. WTF??? So I'm supposed to set it in the middle & lock it down. If it's not perfect I have to loosen the set screws that hold the GB in place, slide the GB & tube back enough to get an allen wrench into the set screw, adjust adjustment screw, re-tighten set screw, slide GB & tube back into place & tighten the set screws that hold the GB in place. Repeat as needed. Why would anyone make an ADJUSTABLE gas block like this?
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R.I.P. CPO Matt Mills-(DEVGRU)- You will NEVER be forgotten!
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#6320425 - 06/02/16 06:30 PM Re: Anybody use a Joe Bob Outfitter's adjustable gas block? [Re: LFD2037]
tannerlst Offline


Registered: 01/31/09
Posts: 5169
Loc: Dallas
I have one on ar ar15, no problems here ,



Edited by tannerlst (06/02/16 06:33 PM)

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#6320427 - 06/02/16 06:32 PM Re: Anybody use a Joe Bob Outfitter's adjustable gas block? [Re: tannerlst]
LFD2037 Online   happy
THF Trophy Hunter

Registered: 11/05/08
Posts: 7414
Loc: TEXAS
Originally Posted By: tannerlst
I have one on ar ar15, no problems here

Does your barrel step up in size just past where the GB mounts?
_________________________
R.I.P. CPO Matt Mills-(DEVGRU)- You will NEVER be forgotten!
10-25-75 / 8-6-11 *K.I.A.*

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#6320428 - 06/02/16 06:32 PM Re: Anybody use a Joe Bob Outfitter's adjustable gas block? [Re: LFD2037]
BigPig Offline
THF Celebrity

Registered: 08/27/09
Posts: 10755
Loc: Forney, Tx
Should've bought a Syrac
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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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#6320429 - 06/02/16 06:33 PM Re: Anybody use a Joe Bob Outfitter's adjustable gas block? [Re: BigPig]
LFD2037 Online   happy
THF Trophy Hunter

Registered: 11/05/08
Posts: 7414
Loc: TEXAS
Originally Posted By: BigPig
Should've bought a Syrac

I know, I know. I never cheap out on stuff but I did this once. Bit me in the azz!!!!
_________________________
R.I.P. CPO Matt Mills-(DEVGRU)- You will NEVER be forgotten!
10-25-75 / 8-6-11 *K.I.A.*

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#6320436 - 06/02/16 06:37 PM Re: Anybody use a Joe Bob Outfitter's adjustable gas block? [Re: LFD2037]
KRoyal Online   sleepy
THF Celebrity

Registered: 01/24/07
Posts: 14648
Loc: Sherman/North of Dallas
I use one on my 308 AR no problems but I tuned it with my rail off and tightened it down and put my rail back on. My keymod rail comes off with 2 star screws YMMV
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#6320441 - 06/02/16 06:40 PM Re: Anybody use a Joe Bob Outfitter's adjustable gas block? [Re: KRoyal]
LFD2037 Online   happy
THF Trophy Hunter

Registered: 11/05/08
Posts: 7414
Loc: TEXAS
Originally Posted By: KRoyal
I use one on my 308 AR no problems but I tuned it with my rail off and tightened it down and put my rail back on. My keymod rail comes off with 2 star screws YMMV

I can slide my HG off w/2 screws but that's not the problem. I plan to tune it w/out the HG on but it really won't make it any quicker/easier due to the set screw location.
_________________________
R.I.P. CPO Matt Mills-(DEVGRU)- You will NEVER be forgotten!
10-25-75 / 8-6-11 *K.I.A.*

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#6320484 - 06/02/16 07:10 PM Re: Anybody use a Joe Bob Outfitter's adjustable gas block? [Re: LFD2037]
KRoyal Online   sleepy
THF Celebrity

Registered: 01/24/07
Posts: 14648
Loc: Sherman/North of Dallas
Oh I get what you're saying now. I can get to my set screw without moving the gas block.
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#6320497 - 06/02/16 07:20 PM Re: Anybody use a Joe Bob Outfitter's adjustable gas block? [Re: KRoyal]
LFD2037 Online   happy
THF Trophy Hunter

Registered: 11/05/08
Posts: 7414
Loc: TEXAS
Originally Posted By: KRoyal
Oh I get what you're saying now. I can get to my set screw without moving the gas block.

Is your barrel thicker, towards the action, than where the GB mounts?
_________________________
R.I.P. CPO Matt Mills-(DEVGRU)- You will NEVER be forgotten!
10-25-75 / 8-6-11 *K.I.A.*

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#6320500 - 06/02/16 07:23 PM Re: Anybody use a Joe Bob Outfitter's adjustable gas block? [Re: LFD2037]
KRoyal Online   sleepy
THF Celebrity

Registered: 01/24/07
Posts: 14648
Loc: Sherman/North of Dallas
Just a very small lip that holds the gas block in place but it's not to much thicker. I'd take my rail off and check but all my tools got stolen lol.
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#6320513 - 06/02/16 07:32 PM Re: Anybody use a Joe Bob Outfitter's adjustable gas block? [Re: LFD2037]
LFD2037 Online   happy
THF Trophy Hunter

Registered: 11/05/08
Posts: 7414
Loc: TEXAS
No sweat. Mine increases, I believe, from .750 to .950 where the GB stops. Sorry about your tools!
_________________________
R.I.P. CPO Matt Mills-(DEVGRU)- You will NEVER be forgotten!
10-25-75 / 8-6-11 *K.I.A.*

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#6320517 - 06/02/16 07:34 PM Re: Anybody use a Joe Bob Outfitter's adjustable gas block? [Re: LFD2037]
KRoyal Online   sleepy
THF Celebrity

Registered: 01/24/07
Posts: 14648
Loc: Sherman/North of Dallas
Yea .950 is like bull barrel mine is definitely not bull barrel thickness after the gas block.
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#6320669 - 06/02/16 08:31 PM Re: Anybody use a Joe Bob Outfitter's adjustable gas block? [Re: LFD2037]
LFD2037 Online   happy
THF Trophy Hunter

Registered: 11/05/08
Posts: 7414
Loc: TEXAS
Yeah, it's thick. I'm sure that's what the issue is but nowhere do they say "not recommended for a heavy barrel". Oh well, looks like an excuse to get the Syrac I was going to originally get! Anybody looking to buy a JBO adj. GB, PM me. But, I wouldn't recommend it for a heavy barrel!
_________________________
R.I.P. CPO Matt Mills-(DEVGRU)- You will NEVER be forgotten!
10-25-75 / 8-6-11 *K.I.A.*

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#6320688 - 06/02/16 08:41 PM Re: Anybody use a Joe Bob Outfitter's adjustable gas block? [Re: LFD2037]
Anton Chigurh Online   content
Bird Dog

Registered: 06/22/14
Posts: 343
Loc: Stephenville
So if I'm understanding, the problem is you have to remove the GB to adjust it? If so that does suck. Have to get yourself a Syrac or SLR sentry so you can adjust it from the muzzle end.

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#6320809 - 06/02/16 09:49 PM Re: Anybody use a Joe Bob Outfitter's adjustable gas block? [Re: Anton Chigurh]
LFD2037 Online   happy
THF Trophy Hunter

Registered: 11/05/08
Posts: 7414
Loc: TEXAS
Originally Posted By: Anton Chigurh
So if I'm understanding, the problem is you have to remove the GB to adjust it? If so that does suck. Have to get yourself a Syrac or SLR sentry so you can adjust it from the muzzle end.

For the most part, yes. I don't have to slide it all the way off the barrel but I have to do 98% of the work to remove it. I just read the 1 star reviews on it & they all gripe that they can't adjust it w/out doing as I said. It's 100% GTG if you don't have a heavy barrel. Granted, it was only $35 delivered as opposed to SLR & Syrac being ~$120.
_________________________
R.I.P. CPO Matt Mills-(DEVGRU)- You will NEVER be forgotten!
10-25-75 / 8-6-11 *K.I.A.*

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