This Diamondback OEM replacement barrel is a 5.5-inch 5.56x45mm NATO barrel of 4150 chrome moly vanadium steel with a black nitride finish, a pistol-length gas system and 1:8 twist.
- Manufacturer Part # : 556P55H50B8R
- Type : AR-15 Barrel
- Caliber : 5.56x45mm NATO
- Barrel Length : 5.5"
- Gas System : Pistol-Length
- Finish : Black Nitride
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