Trybe optics red dot - TRYBE Optics 1x21mm Micro Advanced Ruggedized Optic Red Dot Sight, RMSc Footprint

Although it is way too early to discuss long term reliability and durability, I can say that this far this is a really good Red Dot, especially for the home defense shotty. The dot is crisp and clear. The window is sufficient for two eye viewing and target acquisition. And the shake-on functions flawlessly, so you don’t have to worry about finding buttons in the dark at 3am. The fit is really tight the first time when installing over the threaded inserts but once it has been installed and you reinstall it fits perfectly and snug.