AR-15 5.56/.223 14.5" blue M4 contour barrel

AR-15 M4 5.56/.223 14.5" blue contour barrel. Threaded 1/2x28 for flash hider.

• 14.5” M4 5.56 CALIBER BARREL
• GAS BLOCK .750 
• M4 BARREL EXTENSION
• MATERIAL 4140 ANNEALED
• 1-7 TWIST
• CARBINE GAS SYSTEM
• PARKERIZED