The San Tan Tactical STT-15 Upper in black is designed in 223 Remington caliber and suitable for 556NATO. This is the lightest billet upper available, made with unique truss pockets that make the receiver stronger and distribute stress evenly, improving your rifle-control and accuracy.
Specs
| Model No. | STTPILLAR1 |
| Model | STT-15 |
| Manufacturer | San Tan Tactical |
| Color | Black |
| Sights | Flat Top |
| Caliber | 223 Remington |
