Featuring a crisp 2 MOA red dot reticle, waterproof housing with shockproof internals, and weighing in at only 3.6 ounces, the AT3 RD-50 Red Dot sight is ideal for shotguns, hunting rifles, and any other firearm with a Picatinny or Weaver rail system.
https://www.amazon.com/AT3-Tactical-RD-50-Micro-Reflex/dp/B01M15X4H2

