Experience precision, durability, and superior performance with the Spikes STU5435R2S Complete Upper, engineered for the AR-15 platform. Chambered in 5.56x45mm NATO, this 16-inch black phosphate barrel paired with a midlength gas system ensures reliable cycling and optimal accuracy. Crafted from lightweight yet robust 7075-T6 aluminum, the black receiver complements the AR-15 with unmatched strength and corrosion resistance. Featuring a 12-inch SAR3 free-floating handguard, this upper is designed for enhanced modularity and heat dissipation, making it perfect for tactical or competitive shooting.
**Key Features and Benefits:**
- **Premium 5.56x45mm NATO 16" Barrel:** Black phosphate finish offers corrosion resistance and extended barrel life with a midlength gas system for reduced recoil and smooth operation.
- **7075-T6 Aluminum Black Receiver:** High-strength, lightweight construction guarantees durability without adding unnecessary weight.
- **12" SAR3 Free-Floating Handguard:** Provides superior accessory mounting options, improved weapon balance, and enhanced accuracy by eliminating barrel contact.
- **Optimized for AR-15 Platforms:** Seamlessly compatible with standard AR-15 lowers for easy installation and customization.
- **Enhanced Heat Dissipation:** The free-floating handguard design enables better airflow, keeping the barrel cooler under prolonged use.
| Specification |
Detail |
| Caliber |
5.56x45mm NATO |
| Barrel Length |
16 inches |
| Barrel Finish |
Black Phosphate |
| Gas System |
Midlength |
| Receiver Material |
7075-T6 Aluminum |
| Receiver Finish |
Black |
| Handguard Length |
12 inches |
| Handguard Type |
SAR3 Free-Floating |
| Compatibility |
AR-15 Upper Receivers |
| UPC |
815648023331 |
| MPN |
STU5435R2S |
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