Spikes STU5435MLS Complete Upper 5.56x45mm NATO 16″ Black Phosphate/Midlength Barrel, 7075-T6 Aluminum Black Receiver, 12″ SAR3 Free-Floating Handguard for AR-15
February 6, 2026
Patriot Ordnance Factory 01309 P415 Complete Upper (Piston Driven) 5.56x45mm NATO 16.50″ Black Nitride Barrel Aluminum Black Anodized Receiver 14.50″ M-LOK Handguard
February 6, 2026
Proof Research 110171 Bolt Action Barrel Blank 264 Cal 24″ Sendero Contour 1:7.50″ Twist 4 Grooves, Carbon Fiber Wrapped
$899.00
Proof Research 110171 Bolt Action Barrel Blank 264 Cal 24″ Sendero Contour 1:7.50″ Twist 4 Grooves, Carbon Fiber Wrapped
2 in stock
Up to 64% lighter than traditional steel barrels of similar contour. Improved heat dissipation for cooler and longer lasting barrels. Wrapped with high-strength, aerospace-grade carbon fiber impregnated with a proprietary matrix resin.
| UPC | 843068110171 |
|---|---|
| Manufacturer | Proof Research |
| Manufacturer Part Number | 110171 |
| Rate of Twist | 1:7.50" |
| Model | Bolt Action Barrel |
| Length | 24" |