【RMSc Footprint】 -- FR1-002 red dot sight is compatible with RMS/RMSc, Holosun 407K/507K footprint. For ultra-compact or compact equipments such as Canik TP9 Elite SC, Canik Mete SFX / SFT, Hellcat OSP, Hellcat Pro OSP, Sig sauer P365xl, Sig sauer P322, Glock 48 mos, Glock 43x mos, Ruger max9, Walther PPS M2, Walther Q4/Q5, SMITH & WESSON Performance Center M&P9 M2.0, SMITH & WESSON M&P9 Shield Plus, etc..
【Ultra long battery life】 -- With extremely low power cnsumption technology, the battery life is up to 40,000 hours. 
【Back-up Iron Sight Design】-- The special design on the rear side of the red dot sight, let it be Co-witness with standard pistol sights.
【Excellent Performace】 -- The structure material is 6063 aluminum, 1500Gs shockproof, the max recoil is up to .45acp. 
【Advanced Technology】 -- Auto-brightness control reticle, with inside light sensor, the brightness of the dot would change automaticlly to match the environment brightness.