Barrel Length: 7,5” to 20”

Barrel Material: SAE 4140 Steel

Caliber: 5,56 (223 Rem)

Twist Rate: 1/7

Groove Sets: 6

Groupment Value: 3 MOA Per 100 Meters

Barrel Outer Diameter Roughness Value: Ra 0,8 µm

Barrel Inner Coating: Ni-Boron

Barrel Outer Coating: Ni-Boron + Black Chrome

Coating Thickness: 0,15-30 µm

General Tolerances Should According to: ISO 2768-F