Truglo Nexus 3-9X42 Black Available in 3–9 x 42mm (TG8539BB) and 4–12 x 44mm (TG8541BB) magnifications - Nitrogen gas–filled - Rubber–coated speed-focus eyepiece - Specially formulated multi-coating provides maximum brightness clarity and contrast - Protective caps cover fingertip–adjustable windage and elevation turrets - Available with duplex reticle or MOA-based BDC reticle - One–screw turret design for easy zero indexing (windage and elevation) - Durable scratch–resistant non–reflective matte finish