Great video- thank you! I recently bought a second factory OEM gas regulator with intention to drill it out myself as you mention at the end of your video... currently the suppressed gas regulator is not available anywhere online that I can see.
You're welcome! I'm glad it was helpful. Good idea to have a factory one with adverse setting then another to drill out for suppressor use. I would start at .112" for both the plug bleed port and regulator housing bleed port. Then go up from there to tune it further. I would be interested to see what size your regulator housing bleed port size it. Also around .095"?
I've heard that the NOX has a tendency to overcompensate and drive the rifle downwards on certain length gas system ARs. do you find that to be the case with the AUG?
I have the NOX on a few other rifles and it does push the muzzle down a little when fired. It does not do it at all on the AUG as far as I can tell. I think its because the heavier weight of the AUG and the weight balance is more to the rear. The ARs I have the NOX on are already front heavy so I think that amplifies the compensation effects of the NOX and overdrives the muzzle. The NOX on the AUG feels really good.
@@IamFreeSpirited I know what buffers you're talking about now thanks for the clarification. I dont think that would have much to do with the suppressed performance. Those are just bumpers at the back of the bolt carriers travel. They dont move with the bcg so they wont affect its weight or velocity. It wouldn't be like putting a heavier buffer in an AR to add reciprocating mass.
@@IamFreeSpirited huh interesting. Can you link me to a place to find these? Are they different durometer rubber or something? I've never seen options for them.
@@dltz Thanks. I think I might go a little bigger than you did, on one hole at least, but basically want more reasonable calibrations on all the holes lol
There is too much gas acting on the piston. I think the port from the barrel to the regulator body is larger than the port in the regulator itself. That means the regulator plug inlet ports are too big. Then excess gas comes out thru the bleed port (more or less for different settings). It's a bit complicated cuz there are 4 gas ports, inlet from barrel to regulator housing. Inlet from gas plug to the gas piston. Outlet port on plug, outlet port on regulator housing. Ideally the inlet port would be smaller, it's harder to weld up and re drill an inlet port than drill out a bleed port. If I were to do this again (I may down the road if I get bored), I would drill a new smaller inlet port in the factory gas regulator "GR(enade)" position. And either drill a minimal bleed port or no bleed port. It would take some testing to get it sized right.
@@dltz you could maybe press-fit metal rod into the barrel hole, then drill that material out to a smaller size. Would be risky not even sure if possoble but short of welding might be the best solution
@@EkulGgats the gas plug ports see extreme heat and pressure changes rapidly, and insert would blow out especially with how thin the wall of the plug and regulator housings are. Welding up the old plug or starting with an unfilled position on an existing plug would be the only two ways I would imagine it could be done.
Hell yeah! I am glad it was helpful! There are a lot of things I do to my firearms where I think "someone has done this before... i just know it... but I can't find any information on it." So I jump into the project, and film it in hopes others find the information useful like I would have when I was considering the project.
@@DaSmisker I would start with drilling out the gas regulator body bleed port to the same size as the bleed port in the plug (.112" - but measure your gas plug bleed port hole to confirm). All the smaller drill steps before that weren't needed. Its still overgassed. I may still drill mine out bigger to dial in suppressed performance. Both holes would need to be drilled out at this point. I would drill them out incrementally until my lightest range ammo no longer reliably cycled the gun WITHOUT the suppressor. Then I would stop there and confirm function with the suppressor and it should be about right. Knowing what I know now... and I still may do this. Is drill out the grenade (gas off) setting of the factory gas regulator. I don't care about having single shot capability with my suppressor. I would start with a very small hole from the barrel port and restrict gas coming into the regulator rather than drilling larger holes to bleed more off. Probably start with a .030" hole or something and go up from there. I would be slightly worried that not having a bleed port would overpressure that regulator, but I know there is a second bleed port further back that dumps pressure after the gas piston passes it on its rearward travel. Or what I may do is drill a tiny (like .030-.050") bleed port for that position, the drill out the inlet port until it functions like I want. That way I could minimize the report from that gas regulator.
@@DaSmisker Haha fair enough. It takes me some time to think about what I want to do and come up with a plan. Enjoy shooting your new AUG, and happy tinkering later on!
Great video- thank you! I recently bought a second factory OEM gas regulator with intention to drill it out myself as you mention at the end of your video... currently the suppressed gas regulator is not available anywhere online that I can see.
You're welcome! I'm glad it was helpful. Good idea to have a factory one with adverse setting then another to drill out for suppressor use. I would start at .112" for both the plug bleed port and regulator housing bleed port. Then go up from there to tune it further. I would be interested to see what size your regulator housing bleed port size it. Also around .095"?
@@dltz I'll measure it and post the size here.
@@stronghorseracing8070 I appreciate it!
@@dltz What size bit?
My Steyr plug finally came in, I’m curious how good the Arid plug will be its supposed to address many of the issues.
I've heard that the NOX has a tendency to overcompensate and drive the rifle downwards on certain length gas system ARs. do you find that to be the case with the AUG?
I have the NOX on a few other rifles and it does push the muzzle down a little when fired. It does not do it at all on the AUG as far as I can tell. I think its because the heavier weight of the AUG and the weight balance is more to the rear. The ARs I have the NOX on are already front heavy so I think that amplifies the compensation effects of the NOX and overdrives the muzzle. The NOX on the AUG feels really good.
can also change buffers in the rear to help tune the rifle
Which buffers are those? I am not familiar with them.
@dltz the two rods on the rear have buffers on em. do you have reddit or discord. I can send pics of it
@@IamFreeSpirited I know what buffers you're talking about now thanks for the clarification. I dont think that would have much to do with the suppressed performance. Those are just bumpers at the back of the bolt carriers travel. They dont move with the bcg so they wont affect its weight or velocity. It wouldn't be like putting a heavier buffer in an AR to add reciprocating mass.
@@dltz it does, I've done it. That's what they were advertised to do. they change ejection pattern, and the dwell time of the bcg
@@IamFreeSpirited huh interesting. Can you link me to a place to find these? Are they different durometer rubber or something? I've never seen options for them.
What type of drill bits did you use? where did you get them?
Regular old high speed steel drill bits I had laying around. You can get them at any machining supply, hardware store, Amazon, etc.
@@dltz Thanks. I think I might go a little bigger than you did, on one hole at least, but basically want more reasonable calibrations on all the holes lol
Is the ultimate issue with these the initial size of the gas port in the barrel being too large?
There is too much gas acting on the piston. I think the port from the barrel to the regulator body is larger than the port in the regulator itself. That means the regulator plug inlet ports are too big. Then excess gas comes out thru the bleed port (more or less for different settings).
It's a bit complicated cuz there are 4 gas ports, inlet from barrel to regulator housing. Inlet from gas plug to the gas piston. Outlet port on plug, outlet port on regulator housing.
Ideally the inlet port would be smaller, it's harder to weld up and re drill an inlet port than drill out a bleed port.
If I were to do this again (I may down the road if I get bored), I would drill a new smaller inlet port in the factory gas regulator "GR(enade)" position. And either drill a minimal bleed port or no bleed port. It would take some testing to get it sized right.
@@dltz you could maybe press-fit metal rod into the barrel hole, then drill that material out to a smaller size. Would be risky not even sure if possoble but short of welding might be the best solution
@@dltz perhaps even some kind of brass tubing that is very tightly fit to the size of the port, just slightly reducing the hole diameter
@@EkulGgats the gas plug ports see extreme heat and pressure changes rapidly, and insert would blow out especially with how thin the wall of the plug and regulator housings are. Welding up the old plug or starting with an unfilled position on an existing plug would be the only two ways I would imagine it could be done.
@@dltz Yeah, isnt the grenanade setting's inlet port fully blocked off?
You are a genius, being thinking about this but i naturally want to see someone else drill their weapon before i do it😁
Hell yeah! I am glad it was helpful! There are a lot of things I do to my firearms where I think "someone has done this before... i just know it... but I can't find any information on it." So I jump into the project, and film it in hopes others find the information useful like I would have when I was considering the project.
@@dltz Awesome! How do you evaluate the procedure now some time after you did it - any other things that you would consider?
@@DaSmisker I would start with drilling out the gas regulator body bleed port to the same size as the bleed port in the plug (.112" - but measure your gas plug bleed port hole to confirm). All the smaller drill steps before that weren't needed. Its still overgassed. I may still drill mine out bigger to dial in suppressed performance. Both holes would need to be drilled out at this point. I would drill them out incrementally until my lightest range ammo no longer reliably cycled the gun WITHOUT the suppressor. Then I would stop there and confirm function with the suppressor and it should be about right.
Knowing what I know now... and I still may do this. Is drill out the grenade (gas off) setting of the factory gas regulator. I don't care about having single shot capability with my suppressor. I would start with a very small hole from the barrel port and restrict gas coming into the regulator rather than drilling larger holes to bleed more off. Probably start with a .030" hole or something and go up from there. I would be slightly worried that not having a bleed port would overpressure that regulator, but I know there is a second bleed port further back that dumps pressure after the gas piston passes it on its rearward travel. Or what I may do is drill a tiny (like .030-.050") bleed port for that position, the drill out the inlet port until it functions like I want. That way I could minimize the report from that gas regulator.
@@dltz Sounds like a plan - I am too chicken to try it now (just bought my AUG) but in a year I know I will start tinkering.
@@DaSmisker Haha fair enough. It takes me some time to think about what I want to do and come up with a plan. Enjoy shooting your new AUG, and happy tinkering later on!