KSC G17 mag acting is weak

[georche]

Hey guys,

I have two mags (both stock. No high flow valves, etc..) for my KSC G17. I fill both of them with gas but one mag has all of the sudden lost a lot of "kick." When I use the other mag the gun kicks hard like it always has but the other mag doesn't have as much power.

I also noticed that the problem mag doesn't fill as "neatly" as the one that works well...but still gets filled in the end. Could the release valve be the problem?

Thanks

[aznpos531]

I have noticed the same thing with my KJ M9. I have 3 mags for it and one of them kicks noticably harder than the other 2. Out of curiousity, I opened them up to have a look and found that the mag with the harder kick had seals/o-rings that appeared "fatter" than the other 2 mags. My guess is that it is able to hold the compression better? I'm very much a noob to GBB's and airsoft guns in general but I thought I'd throw in my thoughts.