AR15 Barrel- 6MM ARC, 18"

• Chamber- 6MM ARC, compatible with type 2 6.5 bolt face

• Length- 18"

• Gas system- Mid Length

• Gas Block Size- .750

• Threads- 5/8-24

• Finish- Nitride

• Twist- 1:7.5

• Material- 41V50 Chrome Moly Vanadium, 5 R rifling

• Extension-M4

• Marked for Caliber and Twist

• Weight- 29.7 oz

• Barrel is Dimpled for Gas Block Set Screw