I have a mint, used once, Viper for sale. Comes with box, instructions, Butler Creek Flip-ups. $450 shipped.
Vortex Optics - Viper 6.5-20x50 PA Mil Dot Reticle
Paid $535 shipped with Butler Creek flipups - this scope has no marks, blemishes - for all intents and purposes a brand new scope but at a good % off new price.