Vortex Spitfire 3x Prism Scope. Model SPR-1303.
Vortex’s Description: “Fixed-power prism scopes have been topping ARs for decades thanks to their simple, compact, and reliable design, but few have come close to the combination of value and performance of the Spitfire 3x. A custom BDC reticle, designed to subtend with most popular 5.56 cartridges, takes all the guesswork out of the equation on shots from 0-500 yards. Meanwhile, the glass-etched reticle can be used with either the red or green illumination or without any power at all like a traditional riflescope, making for an inherently reliable, “Always ready” platform.
Battery Life: Up to 250 hours on the highest setting. Up to 3,000 hours on the lowest setting.
Prism Scopes are not compatible with the VMX-3T Magnifier.”
RKB Armory Opinion: “This has both red and green illumination, and a bullet drop compensator to use with just enough magnification to be useful. For this price, with RKB Armory’s 30-day money-back guarantee, and Vortex’s lifetime warranty, you can’t go wrong.”