CMMG Barrel Sub-Assm 16in MT 416SS 6.5 Grendel Salt Bath Nitride. 5 Grendel by utilizing one of CMMGs dedicated 6.5 Grendel barrel sub-assemblies. Specifications for CMMG 6.5 Grendel 16in Barrel Sub-Assm: Manufacturer: CMMG Color: Black Finish: Salt Bath Nitride Fabric/Material: 416 Stainless Steel Barrel Length: 16 in Barrel Profile: Medium Tapered Gas System Length: Rifle Length Gas Block Journal Size-Diameter: .750 in Threads per Inch: 5/8x24 Barrel Twist Rate: 1-8 Flutes: No Gun Make: CMMG Weight: 1.55 lb Package Contents: CMMG 6.5 Grendel 16in Barrel Sub-Assm CMMG 64DCF0C: Barrel Sub-Assm 16in MT 416SS 6.5 Grendel Salt Bath Nitride