Bushnell Elite Series Tactical Scopes M110 Tube Side Focus Zero Stop Trmr-2 Reticle, 3.5-21 X 50/34mm, Black 3.5-21X magnification and a large 50mm objective lens and a 34mm tube First focal plane Trmr2 reticle with side Parallax adjustment Fully multi-coated optics with rainguard HD and Ultra wide band coatings and argon purged 1 mil click value T-lok locking windage turret and z-lok zero Stop locking elevation turret