Raytheon ELCAN Optical Technologies: Specter™ brand Dual Role Combat Sights (bottom of page, click on specs)
I've been on a quest for the very best 50 cal optic and fell in love with the Elcan 1.5 to 6X dual role combat sight. The very best made in this class IMHO. Turns out this sight has never been produced with a 50 cal reticule. We went to the trouble to be dealers just to find out.
So I contacted the manufacuture. Long story short, ten of these were made in defence grade (way better than commercial grade, I was told) for DOD test, eight were sent in. Two still exist. One has my name on it for 2500.
I have a one time chance to buy two.
Karl(I'm an FNG here, check me out on the guild or 1919A4)