Aimtech bases are manufactured from the finest quality heat-treated aluminum alloy extrusion, machined on American-made CNC machining centers. No gunsmithing required, and iron sights remain usable. Uses Weaver-style rings (not included).
Material: Heat-treated Aluminum Alloy
Smith & Wesson Full Size Models 40 S&W/9mm (Series 5400/4000)
Mounting Hardware Included.
The statements and opinions expressed within Customer Reviews reflect each author's personal perspective and do not imply endorsement by MidwayUSA, its Employees or any other organization. Customers should in no way infer that MidwayUSA has validated review information as safe, accurate or appropriate.