Permits quicker and easier magazine changes. Compact enough to fit carry holsters and not snag on clothing. Standard diameter button with crisp, machine cut checkering is .060' longer than stock for easier thumb purchase. Positive internal stop prevents over-pushing and jamming magazine in place. Machined from bar stock and heat treated for durability. Does not include catch lock and spring. SPECS: Steel, blue finish or stainless steel (SS). Fits 1911 Autos. Button: .25' (6.3mm) O.D., .25' (6.3mm) thick.