But why?

[MANN]

Yes, pneumags are nice as a gee-wiz checkitoutnobatteries13ballspersecond rec play gun. However when it comes to a tournament/practice/srsbiznus it would be sitting in my gear bag.

QFT.

Pneumags look good, fell good, shoot good. I have built dozens that have always worked great...but when its time to get to business I will grab the viking (still set in semi mode).

[drg]

This business about a "Clippard" O-ring is hogwash. There's nothing special about the o-ring in a MSV and even if there were you could get a backup MSV for cheap. In practice that o-ring doesn't fail very often.

[Tombola]

[ezcreation]

To me pneumagging is about control: I can shoot as fast as I want it to be, no RT or bouncing.