San Tan Tactical STT-15L PILLAR Billet Receiver Set - Black

San Tan Tactical STT-15L PILLAR Billet Receiver Set - Black

Precision-machined foundation built for shooters who demand lightweight strength, superior fitment, and uncompromising American craftsmanship. Engineered for .223 Remington / 5.56 NATO platforms, this matched billet receiver set delivers a refined blend of performance and durability for custom AR builds where every detail matters.

San Tan Tactical is committed to American manufacturing excellence, using only the highest-quality U.S.-made materials and advanced machining processes to achieve exceptional consistency and structural integrity. The result is a receiver set that feels solid, cycles smoothly, and elevates the overall performance of any build it’s paired with.

Designed with an integrally machined magazine well flare for faster reloads and improved ergonomics, the STT-15 also features a pillar billet receiver combination that enhances rigidity while reducing unnecessary weight. The lightweight construction makes it ideal for performance-driven rifles where balance, speed, and control are critical.

Matched Billet Receiver Set
Precision-machined upper and lower designed for superior fit and structural alignment.

Lightweight Construction
Reduces overall rifle weight while maintaining exceptional strength and rigidity.

Integrated Magazine Well Flare
Enhances reload speed and improves handling during dynamic shooting.

Pillar Billet Design
Increases durability and stability for long-term performance under stress.

Precision Manufacturing
Built using advanced machining techniques for tight tolerances and consistent quality.

American-Made Materials
Crafted with high-grade U.S. materials for reliability and longevity.

Enhanced Ergonomics
Designed for improved handling, control, and shooter efficiency.

Specifications

• Caliber: .223 Remington / 5.56 NATO
• Material: Billet aluminum (precision machined)
• Finish: Black anodized
• Receiver Configuration: Upper and lower matched set
• Magazine Well: Integrated flared design
• Weight Class: Lightweight platform design
• Design Type: Pillar billet receiver construction
• Compatibility: Standard AR-15 components
• Intended Use: Custom rifle builds (tactical, competition, or duty use)
• Manufacturing Origin: USA-made materials and machining