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
- Caliber: 5.56x45mm NATO
- Barrel Length Range: 16" to 16.99"
- Firearm Fit: AR-15
- Gun Platform: AR-Style
- Sights: Optic Ready
- Barrel Finish: Black Phosphate
- Muzzle: A2 Flash Hider
- Twist: 1:7"
- Type: Complete
- Handguards: 12" SAR3
- Receiver Material: 7075-T6 Aluminum
- Thread Pattern: 1 / 2"x28
- Barrel Description: Mid-Length Steel
- Barrel Length: 16"
- Receiver Finish: Black
- Weight: 4 lbs
- Handguard Finish: Black
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