AR-15 gas block

Havoc308 · 08-11-2014, 12:16 PM

Has anyone had a problem with a gas block lining up properly on a barrel? Just got done with my 1st upper and was wondering.

belt-fed · 08-13-2014, 06:30 PM

Sometimes it is easy to get them off gust a little so I will use a piece of tubing on gas
Tub and test make sure that is lined up

RetVet · 08-13-2014, 07:02 PM

I got one of the used A2 barrels from Apex for building a basic A2 rifle, all original. Went to mount my mil issue gas block/front sight base lining up all holes and using the existing grooves for pinning. The bitch is canted so far to the side no way could it ever be sighted in. I don't see how this barrel could have ever been mounted correctly and used with the original gas block installed so far out of spec.

belt-fed · 08-13-2014, 10:52 PM

I have herd of from a lot of people I don't use those front sights that's one of the
Reasons I mostly use etches or scopes

ColonelKorn · 08-15-2014, 06:13 AM

There's a handy gadget for just such a thing.

You Tube

Havoc308 · 08-15-2014, 08:12 AM

Everything lined up properly, I have a CMMG 300 blackout barrel and a YHM gas block. The set screws went right in the holes so it should be OK. I was just being a little paranoid, being this was my first upper build.

Havoc308 · 08-15-2014, 06:46 PM

Shot it today, worked great, no function issues. Pretty accurate for only having a red dot on it too.

08-11-2014, 12:16 PM	#1
Havoc308 Member Join Date: Feb 2007 Location: Hell's Ditch, SC Posts: 638	AR-15 gas block Has anyone had a problem with a gas block lining up properly on a barrel? Just got done with my 1st upper and was wondering. __________________ Let me be a free man, free to travel, free to stop, free to work, free to trade where I choose, free to choose my own teachers, free to follow the religion of my fathers, free to talk, think, and act for myself--and then I will obey every law or submit to the penalty." - Chief Joseph Alle Kunst ist umsunst Wenn ein Engel auf das Zundloch brunzet (All skill is in vain if an angel pisses down the touch-hole of your musket.) quod futue te ipsum est quid

08-13-2014, 07:02 PM	#3
RetVet Statistical Error Join Date: Mar 2006 Location: Homeless Posts: 43,651	I got one of the used A2 barrels from Apex for building a basic A2 rifle, all original. Went to mount my mil issue gas block/front sight base lining up all holes and using the existing grooves for pinning. The bitch is canted so far to the side no way could it ever be sighted in. I don't see how this barrel could have ever been mounted correctly and used with the original gas block installed so far out of spec. __________________ ^^^ For entertainment purposes. Use only as directed. ^^^ III

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08-13-2014, 06:30 PM	#2
belt-fed Senior Member Join Date: Jun 2014 Location: land of browning Posts: 2,472	Sometimes it is easy to get them off gust a little so I will use a piece of tubing on gas Tub and test make sure that is lined up

08-13-2014, 10:52 PM	#4
belt-fed Senior Member Join Date: Jun 2014 Location: land of browning Posts: 2,472	I have herd of from a lot of people I don't use those front sights that's one of the Reasons I mostly use etches or scopes

08-15-2014, 08:12 AM	#6
Havoc308 Member Join Date: Feb 2007 Location: Hell's Ditch, SC Posts: 638	Everything lined up properly, I have a CMMG 300 blackout barrel and a YHM gas block. The set screws went right in the holes so it should be OK. I was just being a little paranoid, being this was my first upper build.

08-15-2014, 06:46 PM	#7
Havoc308 Member Join Date: Feb 2007 Location: Hell's Ditch, SC Posts: 638	Shot it today, worked great, no function issues. Pretty accurate for only having a red dot on it too.