TFX is the next generation of TRUGLO's Award winning TFO handgun sights. We listened to customers, and made TFX sights more company than ever with a longer sight radius for tighter groupings. We encased the aiming elements inside a virtually indestructible chemical and shock resistant capsule. All of the cnc-machined steel is protected with a rust proof Fortress finish. There is even a highly visible white ring surrounding the front fiber to make it even more visible. TFX sights will amaze even the most discriminant shooters.Features:- fits Beretta PX4 storm (excludes compact)- front sight is green- rear sight is not included for this model- the first and only of it's kind- fully protected TFO technology encapsulated in a virtually indestructible configuration- impervious to oils, chemicals, cleaning solvents and ultra-sonic cleaning processes- unmatched visibility in all shooting conditions 24/7- utilizes quality swiss tritium for maximum brightness- glows in the dark- no batteries required- concealed fiber can not be seen by target- Fortress finish provides a permanent protective coating for maximum protection- snag resistant design- fits standard holsters".