AR15 / M16 Barrel - 5.56 16" Carbine 1:7 M4 - Parkerized

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This AR-15 Barrel is a 16" M4 profile barrel made of 4150 Steel with a parkerized finish, a carbine length gas system with a 1:7 twist rate. The barrel is chambered in 5.56 and machined with M4 feed ramps in the barrel extension. Inspections include CMMs and Air Gauges for the Bores. Weight: 1.80 lb Length: 16" Profile: M4 Contour Twist: 1:8 Finish: Parkerized Material: 4150 Steel Thread Pitch: 1/2x28 Caliber: 5.56 Gas System: Carbine Gas Block Size: 0.750