The Viridian RFX45 with high mount is a full-size enclosed green dot configured for rifles, carbines, and PCCs. It ships with a high Picatinny riser that sets the optic at lower-1/3 co-witness height over flip-up backup iron sights on a long-gun rail. Features: Full-size enclosed-emitter green dot 5 MOA green dot Native Aimpoint ACRO footprint Bundled high Picatinny riser for lower-1/3 co-witness CR2032 battery, ~50,000-hour runtime ~24 x 15.5mm window Instant-On motion activation Configured for Picatinny-railed rifles, carbines, and PCCs. The high riser co-witnesses with flip-up backup iron sights.