These suck! avoid them altogether! - Trijicon Tenebraex killFLASH Anti-Reflection Device for Dual Illuminated RMR ARD

I cannot believe that Tenebraex makes these!! They normally have solid products. I bought these and after using them just ONCE the ARD came out under the slide reciprocating during a match. Sent it back, they sent another and that one broke as well. THEY SUCK!! Cool idea but terrible execution. Can't believe Tenebraex put their name on it.