The Leupold Dual Dovetail TC Encore and Omega Base comes in two different finishes - black gloss or silver. This mounting base features a traditional construction and a classic design to give you a sturdy but low-profile mounting platform for your scope. Not only is the Leupold Dual Dovetail TC Encore and Omega Base sturdy but it comes with two rings that feature a unique twist-and-lock action sequence which gives you a strong reliable connection to your weapon. With this design you do not even need rear windage screws.