SI Defense Barrel AR-15 5.56x45mm NATO 16" HBAR Contour 1 in 8" Twist Matte
- Barrel Length: 16"
- Material: 4140 Chrome Moly Steel
- Twist Rate: 1 in 8"
- Chamber: 5.56x45mm NATO
- Contour: HBAR
- M4 Feed Ramps: Yes
- Chrome Lined: No
- Gas Port Location: Carbine
- Barrel Diameter at Gas Port: 0.750"
- Muzzle Thread Pattern: 1/2"-28
- Finish: Mil-Spec Heavy Phosphate
- The total weight of the product, including the product’s packaging as it sits on our shelf. Since some products ship directly from the Manufacturer, their weight may be unavailable. Because of variations in the manufacturing process, similar products may have differing weights. Unless the product is designated as “Ships Alone”, Shipping Weight does not include the shipping box or packing materials associated with your order. Shipping Weight: 2.500 Pounds
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