Tactical Micro red + green + blue dot sight scope integral weaver picatinny 20mm mount rifle shotgun pistol High quality Tactical 1 x 40 red/green/blue dot sight 9 settings: 3 red, 3 blue, and 3 green brightness levels Parralax free- fog proof, weather proof, shock proof, coated optics Excellent clear, sharp anti glare optics Mounts on 20mm picatinny rails