San Tan Tactical · Carbine · In Production · 2014
| Weight (empty) | 2900 g (102.3 oz) |
| Overall Length | 889 mm (35.00") |
| Barrel Length | 406 mm (15.98") |
| Magazine Capacity | 30 rounds |
| Action Type | Gas Operated Direct Impingement |
| Firing Mechanism | Hammer Fired |
| Muzzle Velocity | 930 m/s (3051 fps) |
| Muzzle Energy | 1730 J (1276 ft·lbf) |
| Effective Range | 500 m (547 yd) |
| Frame Material | Aluminum Alloy |
Primary Caliber: 5.56x45mm NATO
The San Tan Tactical STT-15 Pillar is a premium billet-machined AR-15 semi-automatic rifle chambered in 5.56x45mm NATO, built around the company's signature fully ambidextrous pillar billet receiver set. Each upper and lower receiver is cut from a single block of 7075-T6 certified aerospace aluminum and hand-matched as a true pillar set, producing perfectly concentric and perpendicular surfaces for enhanced accuracy and a tight, rattle-free fit. The flagship configuration pairs a 16-inch mid-len...
Country of Origin: United States