Its called the Black Ops Justice Dealer.
It is in Silver and is a 6 inch CO2 powered Air revolver.
The very cool thing about this revolver is that the metal 4.5mm bbs are loaded into dummy shells and then loaded into the cylinder. Optimum realism for optimum fun!!!
Best part is these babies do not cost alot and are now available at http://www.airsoftrange.co.uk/black-ops-justice-dealer-6-inch-silver-revolver-45mm-bb-co2-air-pistol-2641-p.asp
( For the UK) As it is a air pistol, you will need to collect at store in person or get it shipped to your local RFD. 2 forms of ID required.