How much gas do i need for a gbbr

[Waven]

I was wondering how much gas canisters i need for a full day and half day of skirmishing if i use a gbbr and a gbb pistol. i just recently bought a gbbr

MWS system GBBR + pistol(barely needed to be drawn), 2 bottle of ASG green gas can get me through three 3-4 hrs cqb sessions

But my habit is mostly just single tap, I almost never finish 3 magazines in one 15-30min session

On 07/04/2025 at 08:08, Decp369 said:



they have a fill valve in them that only allows you to fill them so much. I’ll like the video now but basically they hold well more gas, I know you can do it with tm mp7 mags not sure what others you can do it on 

I believe that design has a reason. Some say thecdesign is to ensure there are some space for the liquid gas to expand, and I think it make sense. Since a magazine only holds 35 rounds there is not much point to put more gas in. 

 

[Decp369]

MWS system GBBR + pistol(barely needed to be drawn), 2 bottle of ASG green gas can get me through three 3-4 hrs cqb sessions

But my habit is mostly just single tap, I almost never finish 3 magazines in one 15-30min session

I believe that design has a reason. Some say thecdesign is to ensure there are some space for the liquid gas to expand, and I think it make sense. Since a magazine only holds 35 rounds there is not much point to put more gas in. 

Loads of people who have done it & never run into any issues including myself so everything seems to be fine. 
 

Its well better having more gas in a magazine. On a skirmish might go through all my mags. If I reload them without refilling gas might not get another mag out of it. 
 

with the gas mags modded I can get at least 70 rounds per mag without refilling the gas 
 

 

[GiantKiwi]

The tube exists so you don't overfill it. The better process is to extend the fill valve with 4mm polyurethane tubing (stuff used for pneumatic purposes) and leave the silver tube alone.

 

[SSPKali]

MWS mags without the “mod” will fire 120 rounds easy. That is normally a 12-14g fill of gas, easy to work out vs the weight of gas in the can. One can will be plenty for a days play, maybe take two if you are worried.

Cutting the silver tube down to cram more liquid propane in is a DUMB idea.

Pushing o-rings into the fill valve to prevent the “gas leaking out when filling” is a DUMB idea.

The Marui engineers are not dumb.

 

[shatis]

update i needed less than one can for the whole skrim hahaha