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Barrel Length: 16.50
Gas Block Diameter: 0.750 Inches
Barrel Finish: Manganese Phosphate
Barrel Contour: Medium
Item Length (Inches): 16.500
Cartridge: 5.56x45 NATO
Gas System Length: 416
Color: Black
Make Model Fit: Brownells.BRN-4;Heckler & Koch.416;Heckler & Koch.MR556;Heckler & Koch.MR556A1;Heckler & Koch.MR556A1 Competition;Heckler & Koch.M27;Heckler & Koch.MR27
Item Width (Inches): 1.000
Item Height (Inches): 1.000
Material: 4150 Steel
Muzzle Threads: 1/2"x28
Twist: 1-7
Quantity: 1