Trijicon Tenebraex Eyepiece Flip Cap for SRS Sight is a part of the high quality and dependable Red Dot Sight Accessories from Trijicon. All of the features you need for a price you want. Red Dot Sight Accessories from Trijicon are well known for their quality and Trijicon Tenebraex Eyepiece Flip Cap for SRS Sight upholds that standard.