Brownells Brn-4 Barrels 5.56x45mm

Brownells Brn-4 Barrels 5.56x45mm

Cartridge: AKK_5.56 x 45
Contour: Heavy
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: