Primary Arms SLX RS-10 Mini Reflex Sight - The RS-10 embodies the core principles of SLx, bringing unmistakable value and innovation along with relentless field testing. Over the past year, the RS-10 has survived over 23,000 rounds, including mostly pistol-fired .45 ACP. Since designed this optic in-house, You demanded that it be the most trustworthy mini reflex sight at its price point. After thousands of rounds from a SCAR-17-and 0 critical failures-we're confident the RS-10 will exceed all expectations. Ruggedly Reliable : This optic features a ruggedized 7075 aluminum body, which was extensively field-tested and proven reliable after 23,000 rounds fired; Enhanced Engineering : The SLx RS-10 incorporates features you won't find on similar optics, including a side-loading 2032 battery compartment and full night vision compatibility; Unbeatable Value : Despite its impressive feature set, the SLx RS-10 is one of the most affordable mini reflex sights on the market and comes with a transferable lifetime warranty;