Fits Smith & Wesson M&P SD9 VE™ SD40 VE™ models. (Excluding M&P SHIELD™ & C.O.R.E. Series) – Replaces rear sight to allow the mounting of any Trijicon RMR. – Made from steel weighs 34 grams. – The RM45 includes: – 1-Mount with Dovetail Base – 1-Sealing Plate – 2-Mount Screws – 2-RMR Screws