Vortex Optics Diamondback 4-12x40 Riflescope (Dead-Hold BDC MOA, 1" Tube)
The Vortex Optics Diamondback 4-12x40 is a second focal plane riflescope built around a 4-12x magnification range and a 40mm objective lens, using the Dead-Hold BDC (MOA) reticle for holdover and wind holds.
This model features a 1" tube, capped adjustment turrets; turret caps are not present/not shown in photos with 1/4 MOA adjustments, a 100-yard parallax setting, and a fast-focus eyepiece. The optic is constructed from aircraft-grade aluminum, with fully multi-coated lenses and an argon gas purged, O-ring sealed design for waterproof and fogproof performance.