Ruger Security-9 9mm Semi-Auto Pistol, 4″ Barrel, Blued, 10+1 Capacity – Model 3819

The Ruger Security-9 is a full-size, hammer-fired 9mm pistol built for shooters who demand reliable performance without unnecessary complexity. With a 4-inch barrel, serrated black oxide steel slide, and a manual thumb safety, the Security-9 is an honest, no-frills handgun well-suited for home defense, range training, and everyday use where a higher-capacity model isn’t required or permitted. Two 10-round magazines are included, making this an ideal option for compliance-restricted jurisdictions or shooters who prefer standard-capacity configurations.

Key Specifications

• The pistol is chambered in 9mm, offering widely available and affordable ammunition options.
• The barrel measures 4 inches in length, providing a solid sight radius and balanced handling.
• Capacity is 10+1 rounds, with two 10-round magazines included in the box.
• The action is Double Action Only (DAO) with a smooth, consistent trigger pull.
• A manual thumb safety provides an added layer of control in ready-carry and home-defense scenarios.
• The slide features serrated black oxide steel construction for a secure grip and corrosion resistance.
• Sights are 3-dot adjustable, allowing the shooter to dial in their point of impact.
• The rifling rate of twist is 1-in-10 inches, stabilizing a wide range of 9mm bullet weights.
• The overall finish is blued, giving the pistol a clean, classic appearance.
• Overall length is 11.2 inches with a shipping weight of approximately 2.3 lbs.

The Ruger Security-9 delivers the kind of straightforward, dependable performance that made Ruger a household name. Whether you’re building your home defense setup, adding a reliable range pistol to the rotation, or looking for a compliant-capacity option in a restricted state, the Security-9 checks the boxes that matter most — proven mechanics, quality materials, and Ruger’s reputation for durability. Not available for direct shipment to California.