This cost me $100 new. 8/21/10- Price Reduced to $45
Here is the website describing the product-
I know it works on the Bushmaster ORC, and they say it works on their V-Match rifle as well. Not sure what other rifles it works with. Keep this in mind if not ordering it for one of the two mentioned uppers, as it may not attach to other types of Gas blocks.
Mounts by clamping around the gas block. Not a Piccatiny type flat top mount.
Postal money order only. Will ship when I get the M.O.