[Thenooblord]

First, especially if you have a metal propane adapter, check the tip for the tiniest ding or dent, a very small dent can prevent a metal tip from getting ito the valve properly

secondly, all non venting mags (mags that dont hiss out hte valve when you fill them) are very temperature sensitive to fill, if your propane tank is not warmer than your mag there will only br gravity pulling down, against the HIGHER pressure in the mag caused by the higher temperature, try putting the mags in the fridge for a few minutes so cool the metal and the propane should flow more happily


kinda off topic from here but also, as a PSA, ppl advertise and sell these "silent fill Orings" for mags that eliminate the venting action that works to cool the magazine and let it fill properly, these are straight up detrimental to performance of the mags in this specific way, and IMO a total scam
thought process of the silent fill ppl:
"TM mags, vent, and work every time all the time,
WE mags and KJW mags are a pain to fill sometimes and unreliable
yea lets make our TM mags more like those mags, were the smartest!"