99% of the time when I run AKG 460/480's I haven't used shockmounts at all, I use plastic mic clips. Smaller, lighter, cheaper, no drooping, I've never had an issue with an audible thump in my tape from someone kicking my stand, and I'm pretty sure the stand must have been kicked a few times. Frequently I use AKG brand clips that come with the mics, but other times I've used those cheap generic clips that come with low end mics, or clips that came with Nak300's.
The point is... if you have some plastic mic clips, try them and see if you have a problem with vibration. If not, don't worry about it. When it comes to guns, stiff clips are probably the best option.