Check the listing for details. Compact Red Green Dot Sight 20mm 3 MOA Mini Reflex Sight for Picatinny. Color: Black, Condition: New. Listed at 45.99 USD. Matte black featuring a 3 MOA Dot reticle with 11 brightness settings.Red/Green buttons toggle between red dot and greed dot.Waterproof construction: O ring sealed optics stay dry inside, even when totally immersed in water. (IPX-7 rated for complete water immersion up to 1 meter).Shockproof construction: Built to withstand bumps, bangs, drops and the rough and tumble environment of the field.Nitrogen purged fog proofing: Nitrogen inside the scope ensures interior optical surfaces won’t fog due to humidity or rapid temperature change.Integrated M1913 Picatinny interface provides industry-standard mounting options for a wide range of applications.Mounts easily on most picatinny rails and is compatible with pistols, shotguns, rifles and muzzleloaders.