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14 hours ago
AR-STONER Barrel AR-15 5.56x45mm NATO M4 Contour 1 in 7" Twist Chrome Moly Black Nitride - $61.81 This AR-STONER barrel features a 5.56x45mm NATO chamber for full compatibility with surplus mil-spec ammunition or commercial 223 Remington ammunition. These barrels are constructed of chrome moly steel