Abalone button release is hydraulic like. Saw a VaperCon 2012 video where PBusardo interview Electronicstix and they show it in action. Didn't look girly to me at all. Its too expensive for most though.
http://www.youtube.com/watch?v=4Ew4vVwbKKU&feature=relmfu
Its around the 6 minute mark on this video. Check it out.
http://www.youtube.com/watch?v=4Ew4vVwbKKU&feature=relmfu
Its around the 6 minute mark on this video. Check it out.
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