DoubleStar Barrel AR-15 5.56x45mm NATO M4 Contour 1 in 7" Twist 16" Chrome Moly Phosphate with Front Sight Base Preban
- Length: 16"
- Material: Chrome Moly
- Contour: M4
- Chamber: 5.56x45mm NATO
- Twist Rate: 1 in 7"
- Chrome Lined: Yes
- Finish: Matte
- M4 Feed Ramps: Yes
- Muzzle Thread Pattern: 1/2"-28
- Gas Port Location: Carbine
- Exterior Diameter at Gas Port: 0.750"
- Extras: Barrel extension, barrel nut and front sight base with bayonet lug
- Front sight post, front sight detent, detent spring and gas tube are not included.
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