The Leapers UTG Pro OP3 Micro SLS Single Dot Black Anodized 1x 4 MOA Red Dot Reticle combines rugged precision with versatile compatibility, featuring precision machined 6061-T6 aluminum finished in a matte black anodization and a bright 4.0 MOA red dot with eight brightness settings to adapt from dim indoor ranges to bright outdoor conditions. Its surrounding light sensor allows automatic brightness adjustment or manual control, while a side loading battery compartment eliminates the need to remove the sight and re-zero when replacing a CR2032 battery, delivering 15,000+ hours of reliable middle-brightness performance. With crisp 1 MOA per-click windage and elevation adjustments, this red dot sight provides precise shot placement across a wide field of view through a multi-coated glass lens that maintains clarity in all lighting. The OP3 Micro SLS is IPX7 waterproof, includes a removable low-profile Picatinny mounting base that interfaces with the common RMR footprint, and co-witnesses with most suppressor height iron sights. A tertiary aiming point laser engraved on the rear hood adds an additional reference, and its compatibility extends to most optics-ready pistol systems, making it a practical choice for competition, duty, or range use.