Lining up a gas block?

[remymartin]

Is there a good method to line up a gas block on a AR? I have a DD clamp on block that gave me fits for awhile. I tore everything down, stuck my finger in the chamber and blew down the barrel, and adjusted the block as such, trying to get max flow. Is there a better way? I would think pinned is better, but when one starts mixing and matching parts will pinned line up 100%? I can't think of a better way to do it other than how I described above, is there anything more precise?

 

[IndyGunworks]

they make a jig that index's on the gas port of the barrel and pilots a drill to give some small recesses for the locking screws to set into... if its just a clamp on, eyeballing it along the centerline of the barrel/reciever is my prefered method and i have never had to reinstall one yet.

 

[remymartin]

they make a jig that index's on the gas port of the barrel and pilots a drill to give some small recesses for the locking screws to set into... if its just a clamp on, eyeballing it along the centerline of the barrel/reciever is my prefered method and i have never had to reinstall one yet.

It seems depth may also be an issue though. Do you just slide it back as far as it will go?

 

[blue edge]

I use a dial caliper & a sharpie

 

[sloughfoot]

Is there a good method to line up a gas block on a AR? I have a DD clamp on block that gave me fits for awhile. I tore everything down, stuck my finger in the chamber and blew down the barrel, and adjusted the block as such, trying to get max flow. Is there a better way? I would think pinned is better, but when one starts mixing and matching parts will pinned line up 100%? I can't think of a better way to do it other than how I described above, is there anything more precise?

This is how I do it. Then I make sure the gas tube is running straight down the barrel.

 

[I Like Firearms]

Take it to Ranger Supply, He'll help ya out..

 

[chipdog4]

It seems depth may also be an issue though. Do you just slide it back as far as it will go?

If you using standard handguards with a handguard cap behind the gas block, then yes.
If it's a free float, then it probably needs to be spaced out.