Smith & Wesson M400 SDI 5.56 11" SBR

Smith & Wesson M400 SDI Short-Barreled Rifle

The M400 SDI represents Smith & Wesson's commitment to delivering a purpose-built, compact rifle platform. This short-barreled rifle (SBR) chambered in 5.56 NATO features an 11-inch barrel, making it exceptionally maneuverable in tight spaces while maintaining the ballistic efficiency of the intermediate cartridge.

Key Features

• Barrel Length: 11 inches, optimized for close-quarters work
• Caliber: 5.56 NATO
• Platform: Direct impingement operating system
• Finish: Black anodized aluminum and steel
• Design: Purpose-built for tactical and defensive applications

Performance Characteristics

The short barrel provides rapid target acquisition and excellent handling in confined spaces. The 5.56 NATO cartridge delivers reliable performance across a wide range of ammunition types, from full-power loads to lighter training rounds. The compact profile makes this rifle suitable for home defense, tactical training, and specialized applications where maneuverability is paramount.

Practical Considerations

As a short-barreled rifle, this firearm requires proper federal registration and compliance with all applicable laws. The reduced barrel length results in increased muzzle blast and flash compared to longer-barreled rifles, making hearing protection and a quality muzzle device worthwhile investments.