Some don't. Especially TM mags

What temperature? Just going with instinct I would say they're not going to work at all. Use an electric gun.

I was always curious about whether to leave the pistol / GBBR cocked or not. Can anyone shed some light on this?

The question came up again with the recent acquisition of a WE GBBR that will not set into safe unless the gun is cocked. Is it safe to leave it cocked? I assume yes.

Safe in both case, in theory
The springs will loose its "spring" through work, being repeatedly compressed back Zander forth

But technically, a gun is safer if not cocked, no mags and all, than if cocked and on safe

Long story short:
Treat it as a real gun->
mag out, empty chamber, returned to battery/uncocked

Those Germans always being ready to shoot someone haha. I'm assuming you're speaking of a G36? No safety unless cocked?

My friend ran an Mp9 almost flawlessly in probably 5 degrees or so. The NS2 system works quite well. Another alternative is use propylene, it has higher pressures.

Has anyone tried 410A refrigerant? "red gas" is just R-22, which is being phased out of production, and propane in also a refrigerant. 410 is just at a higher pressure at lower temps, roughly the same as propane on a warm day actually.

Thanks MultipleParadox,

Jamroxorz - British flag, not german ;)

Jamrxorz: M4s are built like that - you can't engage the safety unless the gun is cocked. I never understood the reason for that. 1911s do that too.
Are G36s like that as well?

Always ease springs. Mags empty, hammer/striker released, bolt/slide forward.

As for why you can't put them to safe it gives you a very easy one handed way to check if you've got a cocked weapon in the dark etc.

That makes sense on an M4, and I currently utilize that when I'm putting my guns away, to make sure they're not cocked.
Is that the same reason for a 1911? It's got it's cocked hammer extruding from the gun.

I always followed the train of thought of keeping at least a little gas (with the added silicone oil) in your mags, to help slow down the drying out of the orings.

Mags empty of BBs. Part of easing springs.

If you're in the dark or you need to have your eyes elsewhere you won't see that hammer.

Your thumb naturally falls on the safety lever first. So that's easy to try and push up first thing.

Makes sense,

I also hear its damaging to let the hammer fall by itself when the mag is out of the WE M4. Is there a good way to release the hammer? Or is doing it now and again not a big deal.

I don't worry about it myself but if you like.

Pull and release charging handle. Now switch to safe.

Push out rear pin and remove bolt.

Place thumb on hammer, switch to fire and pull trigger. Catch and ease hammer forward. Close up and store bolt and rifle separately. Just like a real AR.

I don't think anyone stores a real AR with the rifle and bolt seperated...

It's a useful info about gas gun care. I'm more like a collector than a gamer. I collect only gas guns within these 2 1/2 year around 15 - 20 different rifles and pistols, new and used. I did the gun care and maintain even modify by myself. As of my experience I would like to add a bit more if that also count into gas gun care. Please correct me if I'm wrong.
Gas gun has more vibration and higher impact than electric when shooting. Means some pins and screws could get lose easily. By lubricant your moving parts in your weapon, also check if there is any pin pop out or lose screw. That could cause problems if not be addressed and taking care of. Apply thread lock if needed to secure it in place. Further more, check with excessive wear, crack or damage everytime you do you gun care. If there is any, it will belong to maintenance and get gun doc to do it right if you don't know how to handle it. Enjoy and have fun!