hey guys. found this thread via google.
I'm trying to seal 4x Tokyo Marui M9A1 mags.
I took the bases off first, applied teflon tape, put the o-rings on, more teflon tape, lots of silicone oil on each step - still getting hissing / bubbling sound after filling the mags with propane.
I filled the mags hours ago and I can still hear some of them hissing from the base from across the room.
Only option left I can see is to use JB weld silicone - so do I strip the mag bases, clean with degreaser, apply the jb weld silicone sealant, put the o-ring on, put the jb weld silicone sealant on the inside of the mags too - insert the base into the mag, insert pins, put a bit of gas in, leave for 2 days to cure = fixed?
Edit: will this stuff work? https://www.amazon.co.uk/gp/product/...FKNPWYKI&psc=1