Nikon 16517 M-Tactical 308 Scope 4-16x 42mm Obj 27.8-6.8 ft @ 100 yds FOV 30mm Tube Black Matte Finish BDC 800 The M-Tactical increases riflescope performance through a profound mix of optical design, superior glass, innovative materials, and 100 years of Nikon optical ingenuity. The proprietary glass and multicoating technology used in these optics prioritizes bright, high contrast sight pictures with reticles designed for long range. The zoom rings and matched turrets feature ergonomically-designed knurling for dialing-in your longest shot with speed, precision, and comfort. Long-range M-Tactical models feature directional indicators on the turrets, 4x zoom range, and 30mm, ultra-matte anodized, aircraft-grade aluminum alloy tubes. This 4-16x42mm riflescope features a BDC 800 reticle.