Can't go wrong - Trijicon RX06 Reflex 12.5 MOA Amber Triangle Sight without Mount

Other reviews I have read would lead you to believe that the sight "washes out indoors. This isn't so. The only time I had the pipper wash out is if I aim at a bright light while in the dark, or at some thing bright on TV.
The 24mm lens isn't as large as most others but it is in no way a problem. Both eyes open, dominate eye or weak eye.
The triangle pipper is excellent, much better than a dot. It aids in: pinpoint accuracy, range finding, and "ambush" or leading a target. It is Large enough that it is very easy to acquire yet the point of the triangle makes it very accurate.
Here are the weights of the competitors:
Meprolight M21 Reflex 7.019 oz
EOTech M553 12.3 oz
Aimpoint Comp M3 7.8 oz
Trijicon 42mm Reflex RX30 8.2 oz

Pros: light weight, fast,crisp image,price,no batteries.

This review was written in the old system and had content requirements that are different than reviews written today.