I have an Sig Sauer Tango4 6x24x50 MOA in perfect working order. Has some marks from mounting, but the glass is perfect. Sold the gun it was on so I don't need it anymore. This is the graphite color which you can't find anymore on this model. Online they sell for $650 - I'll let it go for $600 with a one piece Sig mount included. Has the box and paperwork with it. Consider trades - Looking for an AR-10 lower with quality parts or maybe an complete AR-15 or something along those lines.