Brn-4 Barrels 5.56X45MM

Brn-4 Barrels 5.56X45MM

Cartridge: AKK_5.56 x 45
Contour: Heavy
Finish: Black Nitride
Gas System Length: 416
Length: 16''
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


Maker: Brownells
Model: Caliber: 5.56x45mm is a standard NATO caliber commonly used in AR-15 rifles. Length: Barrels come in various lengths, such as 16 inches, 18 inches, or 20 inches, with shorter or longer options available. Material: Barrels are typically made of materials like chrome-moly steel or stainless steel, and the choice can affect factors like weight and durability. Twist Rate: The twist rate of the barrel's rifling affects the stabilization of the bullet in flight.