BudsGunShop.com - barrel type

Sean, yes Sir. 16" Heavy profile chrome lined barrel - 4150 Chrome moly vanadium with M4 feed ramps - 1:9" twist with 6 grooves and lands - A2 flash suppressor. Cheers and stay safe!

Yes sir, heavy barrel chrome lined 1/9 twist that can shoot either 5.56 or 223 rem.

Full specs here
windhamweaponry.com/firearms/rifles/223-556-caliber-rifle/hbc/

Yes this is a heavy barrel according to the upc number, the features on this rifle
"Windham Weaponry AR-15 Heavy Barrel Carbine Features
AR15 Rifle Heavy Barrel Carbine
Caliber: .223 Rem. / 5.56mm NATO
Action: Semi-Automatic, Gas Impingement System
Capacity: 30 + 1- Ships with one 30 Round Magazine (accepts all std. sizes)
Safety: Manual Lever with Indicator Markings on Both Sides of Receiver
Receiver: M4A4 Type Flat Top Upper Receiver with Detachable Carry Handle
Receiver Material: Forged 7075 T6 Aircraft Aluminum with Aluminum Trigger Guard
Receiver Finish: Hardcoat Black Anodize Finish
Barrel: 16” Heavy Profile, Chrome Lined with A2 Flash Suppressor"