Designed to push the rear sight and not mar the handgun. This tool is used for installing, removing and adjusting ghost ring, heinie, warren, sevigny, and adjustable sights. This tool is for Glock models with flat side sights. Use this tool for any flat sided sight that will not fit the standard tool (Product #884401). Instructions are included. DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.