Nikon Prostaff 5 Custom XR Turret Riflescope, 4.5-18 x 40mm Custom XR Turret package which allows you to order a custom engraved turret that matches the ballistics of your load Made with Nikon's fully multicoated optics for maximum brightness and light transmission A quick focus eyepiece allows the shooter to instantly bring the reticle into focus Features a 4-time zoom ratio and long, generous eye relief Optimized for use with Nikon's Spot On Ballistic Match Technology