Fits All Glock Pistol Models (excluding Glock MOS). Designed to be mounted with all full size pistols such as the Glock 17,19, 45 and the compact line of Glock pistols like the 42, 43, 43X.Replaces rear sight to allow the mounting of Trijicon RMRA(R)cc. Made from steel, weighs 34 grams. NOTE: Professional installation recommended. Not designed for Glock MOS style pistols.#html-body [data-pb-style="62DF8289A08F0"]{justify-content: flex-start; display: flex; flex-direction: column; background-position: left top; background-size: cover; background-repeat: no-repeat; background-attachment: scroll; border-style: none; border-width: 1px; border-radius: 0px; margin: 0px 0px 10px; padding: 10px;}#html-body [data-pb-style="62DF8289A08FD"]{border-style: none; border-width: 1px; border-radius: 0px; margin: 0px; padding: 0px;}