I recently bought my first mechanical keyboard, the K70 from Corsair (which I love, by the way).
I was struck by how loud the keys are so I ordered a set of dampening o-rings from WASD Keyboards. They fit over the stems on the keycaps and keep the key from bottoming out and making so much noise.
They DID quiet it down a lot, but they also made the keys feel more "mushy" than I like, so I took them off and I'm offering them up here for anyone who might have wanted to try them on a mechanical keyboard of their own but didn't want to spend $20 on a set. I'll even pay for postage within the continental US.
These are the red o-rings found here:
http://www.wasdkeyboards.com/index.p...tml#ad-image-0
The set doesn't come with a keycap puller but I have an extra I'll throw in. Just PM me with your info and I'll get the set to you.