Meet the Ruger 3810 Security-9, a sleek embodiment of power and precision. Sporting a black steel 4 barrel and a black oxide serrated steel slide, it's as intimidating as it is effective. Its black polymer frame hosts a built-in Picatinny rail, while the grip blends seamlessly in black polymer. SN: 388-42738. A dark knight among firearms, reserved for the bold and the fearless.