The Viridian Venta is a 1x22 enclosed-emitter green dot sight built for the modern sporting rifle (MSR / AR-15 platform). The fully sealed, nitrogen-purged housing uses the Aimpoint Micro T-1/T-2 footprint and ships with a 1.41" lower-1/3 co-witness riser for a Picatinny rail. Features: Enclosed emitter, fully sealed nitrogen-purged housing 1x magnification, 21 x 29mm multi-coated glass lens 2 MOA green dot reticle; 90 MOA total adjustment, 1 MOA per click 10 brightness settings (8 daylight + 2 night-vision compatible) INSTANT-ON motion sensing - auto wake/sleep CR2032 battery, ~30,000-hour runtime IPX7 waterproof Machined 6061-T6 aluminum, hard-coat anodized Aimpoint T2 footprint; includes a 1.41" lower-1/3 co-witness Picatinny mount An enclosed green dot for AR-15 / MSR rifles - the included 1.41" riser sets it at lower-1/3 co-witness height.