Description
Spikes Tactical STU5025R9S is a complete .223 Rem/5.56 NATO upper assembly with a 16 in black phosphate barrel and 1:7 in twist rate. It is optic ready with no sights, and it uses a flat top receiver. A quad rail handguard is included for mounting options.
Key features
- Complete upper assembly
- 16 in chrome lined barrel
- 1:7 in twist rate
- Flat top receiver
- Quad rail handguard, black finish
- Optic ready configuration with no sights
| Specifications | Details |
|---|---|
| Caliber | .223 Rem/5.56 NATO |
| Barrel length | 16 in |
| Barrel finish | Black Phosphate |
| Twist rate | 1:7 in |
| Sights | None, optic ready |




