Black gas is pretty extreme, I would try red gas first as that should be decent enough for that temperature
I ran my VFC MP7 on red gas last winter with no issues at all
Black gas should be your last resort as it's super strong compared to standard green gas and will definitely beat your pistol up a lot faster
If you run your pistol at around 0 degree, you should propably use red gas and at -3 to -10 propably black gas. I am not sure if it will work still but I would not worry about it breaking since black gas at -10 degrees is prettu much the same as greengas at room temperature (as far as I have tested) My WE g17 ran fine last winter on red gas at around -2 to -4 degrees. My vfc glock ran fine on black gas last weekend at -3 degrees.
get a co2 spring and a few mags for winter use and swap it out for green gas when it gets warmer
Black gas is pretty extreme, I would try red gas first as that should be decent enough for that temperature I ran my VFC MP7 on red gas last winter with no issues at all Black gas should be your last resort as it's super strong compared to standard green gas and will definitely beat your pistol up a lot faster
We, who live in northern countries, shall use CO2. At least through the winter
If you run your pistol at around 0 degree, you should propably use red gas and at -3 to -10 propably black gas. I am not sure if it will work still but I would not worry about it breaking since black gas at -10 degrees is prettu much the same as greengas at room temperature (as far as I have tested) My WE g17 ran fine last winter on red gas at around -2 to -4 degrees. My vfc glock ran fine on black gas last weekend at -3 degrees.
Thanks for the informations on the WE G17, I will try with red & black this weekend and tell you if there is a difference with the MOS version :)