Reviews: Moondog Industries Universal Gas Fill O-Ring Set for Airsoft Gas Gun Magazines


31 Customer Reviews
Model: Parts-MI-101012

Displaying 1 to 12 (of 31 reviews)

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by Jordan M. on 2016-07-21 14:30:29
"these are good replacement o-rings, just be careful as they are extremly hard to fit in the tm fill valves
by Tim G. on 2016-03-12 22:16:37
"I you buy a KWA pistol mag order some of these you will need them . They work great .
by Loren M. on 2015-12-21 12:17:43
"These are great!! I used them in my KWA M9 mags after finding that a bad nozzle on a can of gas had broken and wrecked the o-rings. I used these as a replacement and they work great. That all I can say.
by Connor H. on 2015-10-20 19:58:57
"LOVVEEEDDDDD IT!!!! My kriss vector has been shotty with the mags for about 4 or 5 months and i tried everything and saw these. Now, no leaky fill! would buy 100x over
by Tiffany B. on 2015-06-29 18:18:15
"I bought these O-rings for my brand new Walther PPQ, because it was leaking. So when i finally got them they would'nt even fit because they were too big. I bet these would work amazingly for other guns, but not for mine.
by Scott B. on 2015-06-14 08:58:48
"Very happy with these. I have replaced the fill valve o-rings on my KWA KP8 mags (3 each) and my KWA KMP9 mags (2 each) and there is absolutely ZERO spilling from filling even starting with a full can of green gas.

They are somewhat difficult to replace, but I haven't had any tear like what people are saying. Comparing them to the stock KWA charging valve o-rings, they are much thicker and higher quality. I got plenty of leaks with the stock KWA o-rings but none with these.

Here are the steps I take to replace them:
1) Get a sewing needle and poke the o-ring and twist until you get and edge to pull it out.
2) Drop some silicone oil down into the valve.
3) Place moondog o-ring on top and use a pick (not very sharp) to spread around valve.
4) Drop more silicone oil on the top of the o-ring and test fill.
by Orin K. on 2015-01-10 15:39:43
"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 Bradley B. on 2014-12-11 13:24:45
"Nice O-rings. They do the job they are supposed to. I have not had any O-rings break yet. I stretch them slightly by rolling them on a tooth pick before installing them.
by Juliet C. on 2014-05-23 11:20:06
"GET THIS RIGHT NOW you will not regret it you can save any gas mag that wont fill with this amazing o ring i use them on all my gas mags
by Carsten C. on 2014-03-25 05:04:16
"Good replacement fill valve o-rings for you gas mags

+ Lasted a lot longer than stock o-rings
+ Doesn't fall off after repeated fills
+ Seals better than stock o-rings in colder temp ranges.

- Really difficult to install on fill valves
- Easy to tear during install (tore 2 out of 6)
by Mike R. on 2014-01-01 17:14:23
"Work great, fit nice and snug in my gbb pistol mags!
by Giancarlo B. on 2013-11-22 13:42:56
"the O-rings tend to slip out of the valve..

Displaying 1 to 12 (of 31 reviews)

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