Despite sealing around the base o ring and changing fill valves the two DB mags I have for the Taurus will lose their gas overnight.
I’ve heard that WE Tech M92 mags are compatible and don’t leak like a sieve like the DB mags, but before I go looking for them and dumping $160+ on two mags it’d be good to know I’m not throwing my shekels away on something that won’t fix the problem.
This is why I prefer EBB pistols. Maybe I’m better off just putting that $160 towards a MiLF… pistol, I mean.
I found the Fighting Bro air-seal lubricant worked best for my gas mags. Remove both the valves and clean their threads and the mag port thread with cotton buds wet with isopropyl alcohol. Then give the same spots another clean with dry cotton buds. Screw in poppet valve at the mag top. Then hold the mag upside down and add a few drops of the seal lubribant down the fill port. You can use unscrew the spray top and use its feed tube to drip into the port. Then screw in the fill valve. Once done, charge the mag with the lowest KG green gas you have and see what happens. Ideally, the seal lube will get driven into any micro gaps and complete the seal.
If that fails, ive used some of the white grease in the kit - just the smallest dab on a cotton bud, and run a thin stripe along the valve threads - from top to bottom, over the o-rings too. You dont want much at all or you it can make leaks worse.
The reinstall poppet valve, add another couple of drops of the air seal lube into the fill port and then screw in the fill valve.
That has been the most reliable fix ive had for troublesome mags - including my DB Beretta.
That Fighting Bro seal oil really is the goods. Its just the right weight.
Disclaimer - never head of this retailer or bought from them. I just googled the kit and they have it.