Viridian Weapon Technologies RFX Custom Walther PDP WMP Black. Its tiny size is at home on any optics-cut concealed carry pistol or as a close-range offset sight on your rifle. At a mere 4 ounces the RFX 11 is one of the lightest reflex sights on the market. Packed with features including a highly visible and efficient Viridian green 3 MOA dot INSTANT-ON and auto shut off ambient light sensor and over 30k hours of run time make the RFX 11 a must have for any firearm. Specifications for Viridian Weapon Technologies RFX Custom Walther PDP WMP: Manufacturer: Viridian Weapon Technologies Color: Black Emitter Type: Open Battery Type: Lithium Ion Gun Make: Walther Gun Model: Walther PDP Red Dot Sights-Footprint: Walther PDP Package Contents: Viridian Weapon Technologies RFX Custom Walther PDP WMP Viridian Weapon Technologies 9810126: RFX Custom Walther PDP WMP Black