Trijicon Accupoint Rifle Scope, 5-20X50mm, Duplex With Green Dot Reticle, 30mm TR23-1G The Trijicon AccuPoint 5-20x50 riflescope gives tactical shooters, varmint hunters and law enforcement snipers the ability to accurately extend their range in any light. Advanced fiber-optics and tritium aiming-point illumination speeds target acquisition and extends available shooting hours. Dual-illumination system automatically adjusts aiming-point brightness to existing lighting conditions. Manual brightness override allows shooters to easily adjust the reticle to suit their preferences. 30mm tube offers a greater range of mounting options. Rugged, aircraft-quality, hard-anodized aluminum body offers all- weather protection. Unmatched long eye relief protects against the recoil of higher caliber rifles. Easy-to-use external turret controls for windage and elevation adjustment. Side parallax adjuster for enhanced accuracy at long range.