Nikon Monarch 5 4-20x50 ED SF Advanced BDC Matte Black Riflescope ED (Extra-low Dispersion) Glass to reduce chromatic aberration, providing images with superior contrast 5-Time Zoom Range, giving you the versatility for close range shots, out to the furthest distances Spring-Loaded Instant Zero-Reset Turrets Fully Multicoated Optical System Quick Focus Eyepiece