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Evike.com Moondog Industries Universal Gas Fill O-Ring Set for Airsoft Gas Gun Magazines (Color: Red)

49 Customer Reviews

by Orin K. on 01/10/2015
"I got these rings when my GBB magazines were leaking on filling. After installing them, it solved the issue.

Now, I'm trying to install them on my S-Thunder grenades, and they WILL NOT go in. The shells came with no rings, and I thought it was nice I had 4 more of these rings to use up, so I could use 2 more on these grenades. Well, think again, EVERY ONE OF THEM SNAPPED.

They are not a be-all end-all solution to fill valve o-rings.

Pros: Good, if they get installed

Cons: Bad that they cannot be installed.
by Giancarlo B. on 11/22/2013
"the O-rings tend to slip out of the valve..
by Josh K. on 08/19/2012
"Ive tried putting my review on these through a few times. Never makes it...

Anyways.
These things are good if you can get them in good, but its really hard. Some leaks are not fixable with these even if you do get them in solidly. (Most are though)
I had a leak on my WE Hi-capa and the leak required 2 o-rings to stop the leak.

Expect to rip 2-3 of them trying to figure out how to get them in to the fill nozzle.

These are great if you can get them in the valve perfectly. Otherwise they are worthless. Its only $5 though. Pretty good
by Thomas M. on 11/27/2016
"These new o-rings are just as bad as the old ones. Still keep falling out of my SVD mags. Waist of money.