Santan Stt-15 5.56 16" 30-Round Threaded Barrel Rifle

The San Tan Tactical STT-15 5.56 16" 30-Round Threaded Barrel Rifle is a purpose-built modern sporting rifle engineered for tactical operators, law enforcement, and serious civilian shooters who demand reliability and modularity. This platform delivers the balanced performance characteristics that field professionals require—a 16-inch barrel optimized for close-quarters and mid-range engagement while maintaining velocity retention critical to 5.56 NATO ballistics.

The threaded barrel design enables suppressor compatibility and muzzle device customization, making this rifle adaptable to mission-specific requirements without permanent modifications. Built on the proven AR-15 platform architecture, the San Tan Tactical STT-15 combines mechanical simplicity with tactical functionality. The 16-inch threaded barrel accommodates standard 1/2x28 TPI muzzle devices, allowing shooters to integrate sound suppressors, flash hiders, or compensators based on operational needs.

At 10.63 pounds, this rifle achieves a fighting weight that supports sustained accuracy during extended engagements without inducing fatigue—critical for law enforcement and military applications where performance under stress determines outcomes. The 30-round capacity integrates seamlessly with standard 5.56 NATO magazines, ensuring ammunition interoperability across agencies and platforms. This rifle excels in duty rifle roles, tactical training, and competitive shooting environments where precision and modularity take precedence.