NEW FROM A.R.M.S. MOUNTS!
They are designed to allow attachment to all Universal Dovetail and Weaver style Rails. Both are made from durable, metal-reinforced polymer and are a good option when seeking a quality sight. Both are .600" when in the folded position, from the top of the receiver.
They may be purchased separately (#71L-F - $41.83; #71L-R - $60.36) or as a set for $97.01 (MSRP).
For more on these mounts, go to: http://www.armsmounts.com/default.asp?mode=71l
For more on A.R.M.S. Mounts, go to: http://www.armsmounts.com/