Cartridge: AKK_5.56 x 45 Contour: Medium Finish: Black Nitride Gas System Length: 416 Length: 14.5'' Make: Brownells Make: Heckler & Koch Make/Model: Brownells|Brn-4 Make/Model: Heckler & Koch|HK416 Make/Model: Heckler & Koch|Mr556 Model: Brn-4 Model: HK416 Model: Mr556 Muzzle Threads: 1/2-28 Twist: 1-7
Manufacturer: Brownells Model: Caliber: Ensure that the barrel is chambered for the 5.56x45mm NATO or .223 Remington caliber, depending on your rifle's requirements.
Length: Barrels come in various lengths, and the choice depends on factors such as the intended use of the rifle (e.g., long-range precision, close-quarters, etc.) and personal preferences.
Material: Barrels are commonly made from materials such as stainless steel or chrome-moly steel. The material can affect factors like durability, weight, and heat dissipation.
Twist Rate: The twist rate of the barrel's rifling affects the stabilization of bullets. Common twist rates for 5.56mm barrels are 1:7, 1:8, or 1:9.
Profile: Consider the barrel profile, which can influence weight, heat dissipation, and aesthetics. Common profiles include government, lightweight, and heavy.
Gas System: If your rifle uses a gas-operated system, ensure that the barrel's gas system (e.g., carbine, mid-length, rifle) is compatible with your firearm.
