wellll...as the title says, i need some help and thought id ask here first,
the magazines that came with my two resident evil pistols, i belive the o-rings/seals/whatever on them have deteriorated since i never actually used them until just recently,
when i try to fill them, im getting much leakage while filling (dosent leak AFTER filling, just during the fill process you can hear/see the gas thats not making it into the magazine)
edit: im pretty sure its just the fill-valve o-rings
ive got a new magazine for one of them that fills fine, so i do know the differnce between "working as intended" and not

ive done some searching,but my google-fu is weak, anyone know how to take apart the magazines and what sized o-rings i should look for? or know where i can find guides to taking them apart ?
if it helps, teh magainzes are, the Tokyo Marui M92F magazine, and a Tokyo Marui Desert Eagle 50.AE (Hard Kick) magazine