Gas block screw dimple for AR build

[Jwmeador]

Getting started a another AR build and noticed my barrel does not have a dimpled barrel to make sure the gas block is aligned perfectly and securely. Obviously I'm using a retention screw type gas block. Any ideas on how to do this myself? Or should I just leave it the way it is?

 

[Vamptepes]

Personally I just tighten then down. If your worried about it line it up mark it and dimple it yourself. I've never had mine move without dimples so I never worried about it.

 

[IndyGunworks]

they sell a tool to mark and drill dimple location if you really need them..... I have never had any issues... I prefer the two piece clamp on style though... I just put it on and move it around while blowing into the barrel (plugging the chamber as well) until I get the least amount of resistance and maximum airflow then tighten everything down.

 

[Vamptepes]

they sell a tool to mark and drill dimple location if you really need them..... I have never had any issues... I prefer the two piece clamp on style though... I just put it on and move it around while blowing into the barrel (plugging the chamber as well) until I get the least amount of resistance and maximum airflow then tighten everything down.

I like the way you think. My first gun I eyeballed it and wound up blocking half the gas hole so didn't function right. Took it off used a ruler and made a line down the middle and lined that up with the hole on the gas block.

 

[G3hkray]

The barrel is super hard so you will need
really good and freshly sharpened bits if you do it.
Last one I did I just staked the Allen screws

 

[Leo]

pencil mark down the center of the barrel, pencil mark on block to witness alignment of hole. No worries.

 

[sgreen3]

I've used probably 15 of the YHM low pro gas blocks with the set screws over the years and I've yet to dimple any of them. Ill put a small dot of blue thread locker on them and have never had an issue.

 

[Psode27]

I dimpled one slightly crooked.... there, I said it! Works fine though, I made careful pencil marks, measured for the holes to line up, and when I tightened the screw down it canted slightly..... very annoying. I've only had to do one, but next time I'll be slower and probably start with a smaller "pilot dimple".

 

[winchester]

i use transfer screws to mark my dimples. once i check gas operation i replace the set screw with transfer screw to mark dimple location.