Someone please explain the adjustable gas piston to me

[elvis christ 451]

I gather that it's to reduce the amount of force on the spring when shooting higher-power rounds, but what should it be set at when I'm shooting say, 2 3/4 bird shot? Right now the 2 is at about 7 o'clock (right side up) and the 1 is at 3 o'clock when I'm staring down the barrel.

 

My main concern is that occasionally it jams up, because it's getting caught on the safety bar, and I was wondering if adjusting the gas piston would correct this, or if it just needs to be broken in more. It's gotten a lot better, it used to jam about every other round, now I can run 10 through it at a once most of the time, and it will only act up 1 out of 20 rounds or so. It's still an annoyance.

 

Thanks in advance.

[waltham_41 52]

Start by screwing the gas plug all of the way in and see where it stops at. I think 2 but I dont have my shotty out so I could be wrong. If you are really lucky, you will have one of the ones that will shoot everything on setting 1, which is for the more powerful rounds. Some of them do.

 

Just go out to the first position and then go back and forth between 1 and 2. Do not keep screwing out past the initial back and forth to go to the other number I hope I put this so it makes sense.

 

Other than that, I would recommend 3 inch magnums, 3 inch slug and #00buck, 2 3/4 slug and #00 buck and the like on setting 1, stuff like low brass birdshot or mid brass birdshot would be on setting 2.

 

That is my general rule of thumb. ( I do try any new round I buy that falls in the middle to see if it will cycle on 1 before putting it in the 2 catagory.

 

This is how I do it

[Hunter78 1]

Probably just need to break it in more, or switch brands of ammo untill its broke in more. you can add notches with a dremel and really fine tune it, but its probably not necessary

[BradCowin 0]

Probably just need to break it in more, or switch brands of ammo untill its broke in more. you can add notches with a dremel and really fine tune it, but its probably not necessary

 

So its safe/possible to make a 1.5 setting?

[elvis christ 451]

Waltham, when you say screw it all the way in and see where it stops, where should the numbers be sitting?

[jrance@iacwds.com 716]

Doesn't matter. If it is screwed all the way in, then back it out to setting #1 or the next setting #2. Did you get a manual with your shotgun?

1911

[Cobra 76 two 2,677]

If you take the plug all the way out and look at it on the backside you will see how it works and why there are just two settings.

Halfway between either way and you are still basically using setting #1.

[waltham_41 52]

Doesn't matter. If it is screwed all the way in, then back it out to setting #1 or the next setting #2.

 

Thanks 1911, that is what I was trying to say in my own confusing way

 

If you start out on 1 and screw out to 2, you always go back in to 1, never continue screwing it out, just back and forth between the 2 settings.

[Gunfixr 76]

I was thinking of coming up with a 3-setting plug, but I don't really see a lot of need for it.

 

I think it might be more of a gimmick than having any real use. Unless anybody here thinks differently.

[BobAsh 582]

The multi-position plug has already been done. I don't think there's a need for it personally, and I wouldn't want to fool with it.

[SaigaNoobie 66]

When was it done? Is there a picture of it? I'd love to see it.

 

While we're on the subject, and to send it down a different gun, is there anyway to put a Shotgun puck system onto a .308, then, using the gas settings, make ONE setting that is normal Semi-Auto, and another setting that is "Bolt-Action" to eliminate the throwing of brass?

[BobAsh 582]

There are pictures of it here somewhere, maybe I'll try a search later.

 

Yeah you can put a shotgun gas block onto a rifle; Tony has already done it. But if you just want to kill the gas system a relief valve should do it.

[BobAsh 582]

Here ya go: C&S Metal Werks

 

"The ones I designed were 6 position (2 + 4 extra). Once you go from #2 setting (wide open) to the 90-degree mark, the gas-port is closed. You have 90-degrees to work with. You can only get 4 detents cut, in that amount of space.

The reason I went to the trouble of making them was because I wanted a 'turn-knob' on them.

I would never go to the trouble of doing them again, too much work just to get the knob, which is rarely used.

Lathing them out of steel, milling the detents, milling the knob, then heat-treating.... a lot of work for what it is, imho."

 

 

Now, if you could design a self-regulating gas system for the S-12, then you'd have something.

Edited April 4, 2008 by BobAsh

[SaigaNoobie 66]

There are pictures of it here somewhere, maybe I'll try a search later.

 

Yeah you can put a shotgun gas block onto a rifle; Tony has already done it. But if you just want to kill the gas system a relief valve should do it.

 

 

I want to be able to choose whether I want Semi-Auto or Bolt Action.

 

Would there be a way to bleed the gas out of the system before it hit the piston?

[BobAsh 582]

If you sufficiently vent the gas block it won't cycle.

 

Not that it would be "easy" to do, but probably easier than converting to a shotgun gas block.

[Cobra 76 two 2,677]

I have a friend who is trying to do the same thing with his PSL (vent the GB so he can shoot the heavier ball ammo). He's planning to tap a screw thru the side that can be removed to vent the extra gas. I'm not sure that's gonna work. I have seen videos of AKs firing and cycling with no gas tube even intalled. I guess by the time the gas reaches the tube though it's done it's job already. That's why the vented tubes don't reduce the pressure, only keep the action cleaner.

...my .02

[Gunfanatic 221]

Why not just use one of the grenade launcher gas block with the gas system shut off? The one on my yugo worked pretty well.

[aresv 49]

A grenade launcher gas block on a PSL would look funny. Simpler just to tap it and add a removable screw plug.

[Gunfanatic 221]

[G O B 3,516]

On the Saiga shotguns , just remove the floating piston and it would be a bolt action.

[Ironbarr 0]

When replacing/reinstalling the puck, is there a particular side to go in first?

[Ironbarr 0]

Start by screwing the gas plug all of the way in and see where it stops at. I think 2 but I dont have my shotty out so I could be wrong. If you are really lucky, you will have one of the ones that will shoot everything on setting 1, which is for the more powerful rounds. Some of them do.

 

Just go out to the first position and then go back and forth between 1 and 2. Do not keep screwing out past the initial back and forth to go to the other number I hope I put this so it makes sense.

 

Other than that, I would recommend 3 inch magnums, 3 inch slug and #00buck, 2 3/4 slug and #00 buck and the like on setting 1, stuff like low brass birdshot or mid brass birdshot would be on setting 2.

 

That is my general rule of thumb. ( I do try any new round I buy that falls in the middle to see if it will cycle on 1 before putting it in the 2 catagory.

 

This is how I do it

Just checked mine... scewed in tight the # 2 just passed detent.... backed out to detent. I suppose that means maximum gas pressure to run the bolt using low-level loads - backing out to #1 would reduce gas pressure allowing for high-level loads.

 

If the above is the correct analysis, please confirm.

 

Thanks.

Edited April 5, 2008 by Ironbarr

[kellysguy 1]

Instead of tapping for a plug to relive gas, use a plug to BLOCK gas. Back it out some when you want it to work.

 

 

I was thinking Yugo grenade cut off too.

[waltham_41 52]

That is how I understand it. The shape of the back of the gas plug controls the amount of gas that the piston gets to cycle the shotgun.

 

Just dont keep screwing out every time you change settings. Go back and forth IE loosen and tighten between the settings, not loosen, loosen, loosen.

[gtnichols 51]

Yeah, except mine won't tighten all the way up where I would think it should be,

#1,.. #2,...

But it seems to work like it should, except mine doesn't cycle the light rounds on a shortened barrel.

Which leads to,.....

 

This weekend only

 

Gas Block Knock off!!!

 

Gasp Port Reaming!!!

 

Drilling new Gas Hole,...!!

 

Sounds rough ,but I'll report back on how it goes,,..

 

all Directions and dimensions etc ARE FORM THIS SITE!!! YEEEHAWW PAW!

[waltham_41 52]

Yeah, except mine won't tighten all the way up where I would think it should be,

#1,.. #2,...

But it seems to work like it should, except mine doesn't cycle the light rounds on a shortened barrel.

Which leads to,.....

 

This weekend only

 

Gas Block Knock off!!!

 

Gasp Port Reaming!!!

 

Drilling new Gas Hole,...!!

 

Sounds rough ,but I'll report back on how it goes,,..

 

all Directions and dimensions etc ARE FORM THIS SITE!!! YEEEHAWW PAW!

 

Let us know how it goes, I think it would be fun to hip fire some light brass birdshot from a short barrel saiga. If nothing else, for the bling effect, know what I mean?

[BobAsh 582]

... scewed in tight the # 2 just passed detent.... backed out to detent. I suppose that means maximum gas pressure to run the bolt using low-level loads - backing out to #1 would reduce gas pressure allowing for high-level loads.

 

If the above is the correct analysis, please confirm.

 

Yes, #2 is twice the gas.

 

Also see here: Tromix S-12 Service Tips.

[Ironbarr 0]

... scewed in tight the # 2 just passed detent.... backed out to detent. I suppose that means maximum gas pressure to run the bolt using low-level loads - backing out to #1 would reduce gas pressure allowing for high-level loads.

 

If the above is the correct analysis, please confirm.

 

Yes, #2 is twice the gas.

 

Also see here: Tromix S-12 Service Tips.

 

Roger that. Thanks for the input.

[wickeddeus 0]

Alright, I just got a my Saiga 12 recent and it came out of the box with the 2 at 7 o'clock and the 1 is at 3 o'clock if I'm looking down the barrel. Does this mean that the regulator is set to the 2 setting which should be used for light load or the 1 setting for heavy load? I just want to be sure since it's a new toy. If anyone has pictures that would be great. Thanks.

 

 

Edit: Mine is set just like the one in this picture.

 

Edited April 8, 2008 by wickeddeus

[BobAsh 582]

That picture shows the #2 setting.