Spikes STU5035S2S Complete Upper 5.56x45mm NATO 16″ Black Phosphate/Midlength Barrel, 7075-T6 Aluminum Black Receiver, 12″ SAR3 Free-Floating Handguard for AR-15
December 3, 2025
Faxon Firearms Gov’t/Socom Duty Series 5.56 NATO 10.5″ Black Nitride 4150 CMV
December 3, 2025
Spikes STU5435R2S Complete Upper 5.56x45mm NATO 16″ Black Phosphate/Midlength Barrel, 7075-T6 Aluminum Black Receiver, 12″ SAR3 Free-Floating Handguard for AR-15
$788.40
Spikes STU5435R2S Complete Upper 5.56x45mm NATO 16″ Black Phosphate/Midlength Barrel, 7075-T6 Aluminum Black Receiver, 12″ SAR3 Free-Floating Handguard for AR-15
2 in stock
The Spike’s Tactical ST-15 Enhanced upper line-up is designed as a fully Mil-spec compliant upper series for law enforcement. This same level of quality and performance is now available to everyone, all at a price range that is affordable to shooters of any budget. Each component is manufactured to Mil-spec standards. This model features 16″ with 1:7 Twist cold hammer forged Mil-spec Barrel, ST Optimum Profile, Mid Length Gas System, ST Micro Gas Block, .750″ Diameter Gas Seat, Spike’s Tactical Mil-Spec M16 Bolt Carrier Group, ST BAR2 12″ Rail, and A2 flash hider.
| UPC | 815648023331 |
|---|---|
| Manufacturer | Spikes Tactical |
| Manufacturer Part Number | STU5435R2S |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Barrel Finish | Black Phosphate |
| Barrel Length | 16" |
| Sights | None, Optic Ready |
| Rate of Twist | 1:7" |
| Product Type | Complete |
