The Ruger Security-9 pistol in 9mm with a black polymer frame and a 10-round magazine configuration (brand part no. 3811) is a full-size, double-action-only semi-auto built for reliable defensive use, pairing a 4-inch blued barrel with a serrated slide and drift-adjustable 3-dot sights. Ruger ships the pistol with two 10-round steel magazines to accommodate capacity-restricted states, and the manual thumb safety gives shooters an added layer of control. The full-size grip stays the same as the standard Security-9, keeping the shooting experience consistent regardless of magazine capacity. Among full-size semi-auto handguns, this Security-9 configuration favors shooters in restricted-capacity states.

Key Specifications

• Chambered in 9mm.
• Capacity of 10+1 rounds.
• The barrel measures 4 inches, finished in blued steel.
• The magazines are steel, with two 10-round magazines included.
• The sights are drift-adjustable 3-dot.
• The safety system is a manual thumb safety.
• The trigger action is double action only.
• Rifled with a 1-in-10-inch twist.
• Overall length of 14.5 inches.

Frequently Asked Questions

Why does this Security-9 use 10-round magazines? To accommodate capacity-restricted states while keeping the same full-size grip.

What are the magazines made from? Steel, with two 10-round magazines included.

Buy the Ruger Security-9 Pistol, 10+1

Full-size shooting comfort with capacity-restricted-state compliance is exactly what this Security-9 delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.