I don't know a whole lot about the Meprolights so I would encourage you to watch some youtube reviews. These are not as bright as the battery powered optics, but the fiber optic part somehow automatically varies the brightness based on ambient lighting. So you don't ever have to adjust anything. AND, the best part is you don't ever have to replace batteries. The tritium is just a tiny little triangle inside that will glow even in night conditions and the fiber optic part expands the size of the triangle.Please see pictures as this one has some wear on it. The item "Meprolight M21 Reflex Sight Triangle Reticle Used Police Trade Red Dot Tritium" is in sale since Tuesday, May 11, 2021.
This item is in the category "Sporting Goods\Hunting\Scopes, Optics & Lasers\Red Dot & Laser Scopes". The seller is "thatglockguy" and is located in Broken Arrow, Oklahoma.This item can be shipped to United States.