They look rather neat...
But OW, 36 UKP for the cheapest M100S (non-waterproofed)(and that dun include shipping)
If you wanted one, you might check eBay for the ones that they sell for submarines.
Me, I've been looking for a hyper-rare mini-pump that runs off a small 130 motor that came with one of my Robbe body kits w/ a water-cannon mount. It was actually made by Thunder-Tiger, but its a neat little gearpump (yea, I opened it up)
http://imageshack.us/photo/my-images...be1563iv7.jpg/
The pump is the wee piece lower-right, the mount to hold motor and pump is upper-right, and the motor is on the left. I've looked ~ALL~ over, and no-one has it. Closest I can find is the $10-$15 fueling pumps (bought one to look at/test)
Anyone want to see them in action?
WhiteWolf