AR 15 Gas Tube Reamoval

[UberPatriot]

If there is no gas tube it is not semi auto.

[Quiet]

If I take out the gas tube on my upper, to make my AR into a bolt action single shot. How or what do I plugg the port with on the front? JB weld? I have never had one apart so I dont know how they are held in place. Is there threads can I just screw some type of plug in the hole.

Remove gas tube and plug gas block = straight pull bolt-action

Plug gas block by pinning a rod or crimped gas tube into the gas block.
Another option is replacing the gas block with an adjustable gas block and setting it to zero/off.

[Ajlopez281]

I’ve thought about the removal also. Another way to avoid registration, remove the bb, and keep my features but I’m not sure about using the charging handle to pull. A little awkward but if you’re range shooting then it wouldn’t really matter.

[ar15barrels]

OR ... buy an adjustable gas block. Close it for single shot or tune it for normal.

Most adjustable gas blocks will not close down enough to keep the gun from cycling.

[Bullets&Whitewalls]

I bought the AR Stoner side charger from midway and then tig welded my barrels gas port and polished it. You could do the same with your gas block. The thing with pinning a blocked tube or something like it is you might see excess carbon leaking through it. Just a guess anyway, that is another reason why I chose to weld mine up. No leaks and there is no question wether or not it is manual action. And for what it's worth I enjoy shooting it this way.

[DoNotReply]

I don't think the gas tube was designed to hold back that amount of pressure. Why not block off the gas port by moving it slightly to block off the gas port and remove the tube?

[Ki6vsm]

I don't think the gas tube was designed to hold back that amount of pressure. Why not block off the gas port by moving it slightly to block off the gas port and remove the tube?

The OP said he has an A2 front sight base. So presumably it's pinned and can't be shifted around.

You might be right about the strength of the gas tube though. I don't think anyone's mentioned actually welding up the holes (not JB "welding") in the FSB yet. It's much more "permanent" than installing a blocked gas tube.

[ar15barrels]

I don't think the gas tube was designed to hold back that amount of pressure. Why not block off the gas port by moving it slightly to block off the gas port and remove the tube?

The easiest way to block the gas system is to cut off the gas tube so it's only about 1.5" long and then reinstall it upside down.
The pressure at the gas port runs between 12k and 25k PSI, but it's acting on such a small area (0.156" is 0.024 square inches) that it's only making up to about 600lbs of actual force.
The gas tube can handle much higher pressures than that.

[Lead Waster]

Op.... There are other ways to make your own file league and not have to register it...
If that is why you are asking!

This must be an autocorrect thing ... LOL!

[Lead Waster]

I’ve thought about the removal also. Another way to avoid registration, remove the bb, and keep my features but I’m not sure about using the charging handle to pull. A little awkward but if you’re range shooting then it wouldn’t really matter.

There are some nutty charging handles that allow you to "side charge" the rifle..

as an example;

https://devildogconcepts.com/products/hard-charger

The neat thing is, if you shoot right handed, you can actually charge ("work the bolt") with your left hand, so you can keep your right hand on the grip.
Pricy though, I'm sure more than one company makes such things, and honestly, it's not rocket science, just a charging handle that extends down the left side of the receiver, though I THINK that one provides a track for the handle to run down.

[UberPatriot]

The easiest way to block the gas system is to cut off the gas tube so it's only about 1.5" long and then reinstall it upside down.
The pressure at the gas port runs between 12k and 25k PSI, but it's acting on such a small area (0.156" is 0.024 square inches) that it's only making up to about 600lbs of actual force.
The gas tube can handle much higher pressures than that.

Here's an idea for a product,

Modify a gas block so that it vents straight upward to act as an anti muzzle rise compensator.

It could be sold as a compliance part because it removes the possibility of a gas block being used at the same time.

[ar15barrels]

Here's an idea for a product,

Modify a gas block so that it vents straight upward to act as an anti muzzle rise compensator.

If you remove the gas block all together, you get the same function.

[Lead Waster]

Most adjustable gas blocks will not close down enough to keep the gun from cycling.

Mine does... but accident... or else I didn't build mine right, which may be the case. Basically I put a rifle together, then forgot to adjust the block and it was single shot, I was assuming it was the gas block not opened.

[UberPatriot]

If you remove the gas block all together, you get the same function.

Yes, true but if it were adjustable you could regulate how much it compensates.
And the fact that it's there instead of the gas block shows there is no intent to make it semi auto.