Well, not too much to say, it's grease, works fine, and comes in pairs. I'm not too sure about this, but I think this might increase the time it takes for your order to ship because it's a liquid, but that's just a guess.
This stuff has the same cons as the CA gear grease so i'll just leave that part out. Even with a stock Piston head and cylinder, thoroughly cleaning the old grease off the piston head and cylinder wall drastically increase the seal inside and does a very good job of upping the FPS. Only a slight increase but with a simple clean and relube, that's enough to make any Airsofter happy.
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