Need help from the brain trust here

[teksid]

Thanks guys.

[arptsprt]

If you haven’t already, before you do that, check to see if the barrel has dimples. If not, dimpling will go a long way in helping fix the issue.

It looks as if the Allen screws were never tightened. They were backed all the way out.
I’m going to loctite them and see if it’ll run now.

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[GH41]

If you haven’t already, before you do that, check to see if the barrel has dimples. If not, dimpling will go a long way in helping fix the issue.
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Dimples aren't necessary with the right screws. At least not on a square range rifle.

[Iraqgunz]

Let me guess? Is this an Oracle model with the aluminum picatinny gas block? The issue with that gas block, is not only is the barrel not dimpled, but it also made from aluminum.

It looks as if the Allen screws were never tightened. They were backed all the way out.
I’m going to loctite them and see if it’ll run now.

[26 Inf]

If you haven’t already, before you do that, check to see if the barrel has dimples. If not, dimpling will go a long way in helping fix the issue.

Dimples aren't necessary with the right screws. At least not on a square range rifle.

What you want to use is a knurled point/ knurled cup point setscrew; even if using the knurled cup point set screw it is best to make a dimple large enough that the setscrew can begin to enter into the dimple.

If you need a definition of what a knurled cup point is, here you go: https://en.wikipedia.org/wiki/Set_screw

One of the problems is that the hardware stores in my area stock plain cup points, I go to an industrial supply place to get knurled cup points.

The knurled cup points shouldn't be reused, although if the barrel is dimpled and the set screws are secured using blue loctite, it probably doesn't make much difference.

If the gas block is aluminum (use a magnet to check if you are unsure) you might want to replace it with a carbon steel one. These are my go-to: https://algdefense.com/carbon-steel-gas-block.html Of course if you need a pic rail gas block they won't fit the application.

[Iraqgunz]

Red Loctite should always be used for gas block set screws.

What you want to use is a knurled point/ knurled cup point setscrew; even if using the knurled cup point set screw it is best to make a dimple large enough that the setscrew can begin to enter into the dimple.

If you need a definition of what a knurled cup point is, here you go: https://en.wikipedia.org/wiki/Set_screw

One of the problems is that the hardware stores in my area stock plain cup points, I go to an industrial supply place to get knurled cup points.

The knurled cup points shouldn't be reused, although if the barrel is dimpled and the set screws are secured using blue loctite, it probably doesn't make much difference.

If the gas block is aluminum (use a magnet to check if you are unsure) you might want to replace it with a carbon steel one. These are my go-to: https://algdefense.com/carbon-steel-gas-block.html Of course if you need a pic rail gas block they won't fit the application.

[opngrnd]

A buddy needed help with a DPMS before. He ended up dumping the quad rail and aluminum gas block, and replacing it with a AGB and 10" used ALG rail. The AGB fixed the overgassing, and he lightened up the front end quite a bit. It's his square range barrel burner, which he realizes. He bought it before he knew any better, and has since built a better rifle as a go-to.

[26 Inf]

Red Loctite should always be used for gas block set screws.

Geiselle says blue in their instruction for the Super Gas Block, that is what I was going off of since I use those gas blocks.

[Iraqgunz]

Not sure why, but at BCM we used red and at SIONICS we use it as well. So do a few other companies.

Geiselle says blue in their instruction for the Super Gas Block, that is what I was going off of since I use those gas blocks.

[ace4059]

Not sure why, but at BCM we used red and at SIONICS we use it as well. So do a few other companies.

Would rocksett not be equal or better for this job since it can handle higher heat than loctite?