Possibly, but it only does it with TM mags and not any other brand. KJW, KSC, and WE mags all fill perfectly.

Does the magazine hiss after you've stopped filling?

TM mags always piss (leak gas) while filling.

The mags do not leak or hiss after filling, but the valves like to spew gas while filling. It's not a huge plume of propane, but it's enough that the mags are only filled about 1/3 of its normal capacity. Any suggestions would be kindly appreciated. Thank you!

How long are you holding the tank on for? Try holding longer. They will leak/spew. It is normal for TM mags. You could consider new fill valves that have an oring on it or locate the tiny orings to add to the existing valves.

Thanks Coach for that helpful post. I used plumber silicon grease since my Canadian Tires never have what you need.

Western arms M1911 mags.

I did this on 4 KJW 1911 mags with great success.

Only difference is I did not fill any gas into it until it fully cured, as doing so would actually make a mess on the inside, if you are not over zealous with the gasket maker it will not ooze everywhere.

I let it cure for 3 days, and I had none of the gasket maker come out from any mag after filling it and releasing the pin to test for debris.

Necro,

Did this few days ago on my leaky TM M&P9 mag as a last resort, let it cure for 24-48 hours. Worked brilliantly!

Cheers.

I had poor luck lately fixing my mags and don’t have the patience anymore. Anyone good with fixing leaking mags from WA can PM me for the job ($).

I have 9 mags disassembled with more than 6 packs of brand new o-rings. Most of them leak from the outflow valve.

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

https://www.amazon.co.uk/Permatex-80...omotive&sr=1-6

You need blue gasket maker, put it on like the guide and let it cure for 24-48 hours.

Will this work? I already got it on the way https://www.amazon.co.uk/gp/product/...?ie=UTF8&psc=1

Don't know, blue was hard to miss since the first post picture was blue to begin with lol.

Blue was also able to remove in-case it decides to leak in a few years time.

Best you can try it.

There was another guide on here where they recommended permatex black as a more permanent solution. I found that to be the case as well.

As long as it is a sealant that does not react to silicone oil and other propellants it should be fine.