My new Ballistic Advantage 20" DMR fluted barrel

[mdram]

Back in the day when the M1 Carbine was hot some were converted to Pump action to meet the Regulations for Deer Hunting. Wonder if a Side Charger Receiver could be used to make a Pump action?

Hmmmm!

Will

there are pump action ar's and kits on the market, or at least there were at one time
iirc troy was making one

[NightFisher]

there are pump action ar's and kits on the market, or at least there were at one time
iirc troy was making one

I would have never thought that would be a thing.....

https://loadoutroom.com/10635/pump-action-ar-kit-bentwood-simple-effective/

[mdram]

you may start seeing more with some of the laws that are being passed

[bj139]

I would have never thought that would be a thing.....
https://loadoutroom.com/10635/pump-a...ple-effective/

That pump kit is a nice option. I wonder if that could be done with Schedule 40 pipe?

[mdram]

possibly, it looks like the gas key has an extension on it tied to the pump
might need 2 pieces of pipe

[bj139]

I am thinking a steel rod to go in the gas key (not attached to the gas key but attached to the pump handle) and a gas block only to limit forward travel of the pump handle might be a start. Some means to prevent twisting would be needed.
The recoil spring would close the bolt as in a standard AR.

[mdram]

maybe, but i dont think the spring would lock the bolt, it may follow the pump, and not have enough momentum.

[Brett]

Another option for closing off a gas block is to install a short gas tube stub upside down, so the gas tube glocks off the gas port.

Or just install the block backwards so the ports do not line up.

[bj139]

Many people seem to be concerned with sealing the gas port hole. Why?
It is not sealed in a standard AR.
I have been shooting these with nothing over the hole and they work fine.

mdram,
You might be right about the spring.

[Brett]

Why not seal it if there is no use for it? Or, more holes could be added to balance the gas leak, it will probably still work just fine.

[Randy99CL]

I bet if you put your finger over the hole when you fired...it would burn a hole clear through your finger. Wow that would hurt.
Surely you can find something to cover the hole.

[aephilli822]

I bet if you put your finger over the hole when you fired...it would burn a hole clear through your finger. Wow that would hurt.
Surely you can find something to cover the hole.

and you thought a case of "Garand thumb" hurt.....

[diddlyv]

one should think a clamp on gas block turned 90 degrees would solve the problem with hot gases coming out

[Randy99CL]

It's hard to imagine how intense the pressure is inside a gun barrel.

I heard about an amateur gunsmith who was drilling a barrel for a target scope mount. Drilled too deep, into the rifling, said "oh well" and went ahead and tapped the hole for the screw. Mounted the scope and the first shot blew the screw out of the hole with enough force to eject the whole scope ring. Somehow the scope broke loose and landed 10 feet behind the shooter, he was lucky it went over his head.
Probably urban myth, who knows.

Another thing this "high-pressure hole" reminds me of is when I was in the Navy and they warned us about the dangers of superheated steam.
At high pressure, if a pipe got a pinhole the leaking steam was invisible and cut flesh like a razor. For example, if you waved your arm in front of you your hand might drop off. If you walked past a leak your top half could fall off like a character in a cartoon.
They taught that if you suspected a leak, wave a broomstick handle in front of you.

[bj139]

Many barrels are ported by EDM. This is a similar port, although closer to the breech.
The concerns are similar to suggesting you should not put your finger over the muzzle of a short pistol while shooting or over the cylinder gap.
Do you hold your 12" barreled Grendel with your left hand on the muzzle brake?
I don't see the problem.

I did show a photo of what happened when I camo taped the barrel.
It did burn a hole through.
It did not burn a hole through a carbon fiber handguard or a Schedule 40 handguard.
These had a clearance of about an inch.