Product Description
Brn-4 14.5'' Barrel Medium Profile 1-7 1/2-28''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