.223 / 5.56 AR-15 M4 Contour Upper Receivers
- Stock Filter: Out of Stock
- Caliber/Gauge: .223 / 5.56
- Firearm Fit: AR-15
- Barrel Profile: M4 Contour
- Category: .223 / 5.56 AR-15 M4 Contour Upper Receivers Clear All Filters
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