FN America FNS-9L Standard Slide Assembly, Black. This complete slide from FN America comes preassembled by FN and is ready to install with all component parts included. This part is a FN America factory OEM part. Made to the same factory specifications, materials and standards as the parts currently in your FN America firearm. Feel secure in knowing the part you order will be the same as the worn or missing part from your FN America firearm.