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Barrel: 20" Gov't. A2 Profile, Chrome Lined with A2 Flash Suppressor Barrel Material: 4150 Chrome Moly Vanadium 11595E Steel w. M4 Feed Ramps Rifling: 1 Turn in 7" – Right Hand Twist ------------------ Full specs here https://www.windhamweaponry.com/firearms/rifles/223-556-caliber-rifle/20-govt-rifle/

Paul, this rifle has a 20" Chrome Lined Chrome Moly Vanadium Barrel (Forged). The Barrel Material is 4150 Chrome Moly Vanadium 11595E Steel w. M4 Feed Ramps.