5.56x45 1:9 Black Nitride M4 Contour Barrels
- Caliber/Gauge: 5.56x45
- Barrel Twist: 1:9
- Barrel Finish: Nitride
- Barrel Profile: M4 Contour
- Category: 5.56x45 1:9 Black Nitride M4 Contour Barrels Clear All Filters
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