Optics Hunting CenterPoint Riflescope 4-16x40mm with Red & Green Illuminated Crosshair Hunting Scopes Parallax Adjustable Reticle and Picatinny Rings Waterproof, Shockproof, Fogproof, Rugged 1" Nitrogen filled tubes Tool-free windage and elevation adjustment. Fast-focus eye piece, red/green illuminated crosshair parallax adjustable reticle. Magnification: 4-16x /Objective Lens 42mm, Includes weaver-style/picatinny mounting rings and flip-open lens caps Beautiful design and durability built to last,easy to install