USED Cobalt Kinetics RCB-6 7.62mm Black Nitride Stainless Steel 5/8"x24 Threads. 62mm Black Nitride Stainless Steel 5/8"x24 Th - Elevate rifles performance with or without a suppressor using our deliberately engineered muzzle devices. Designed with precision both internally and externally to perfectly complement your chosen suppressor ensuring seamless integration and enhanced functionality. Specifications for Cobalt Kinetics CKRCB6762 RCB-6 7.62mm Black Nitride Stainless Steel 5/8"x24 Th: Manufacturer: Cobalt Kinetics Condition: Used Condition Quality: Excellent Condition Details: Inspect And Rebox Finish: Black Nitride Fabric/Material: Stainless Steel Cobalt Kinetics CKRCB6762 RCB-6 7.62mm Black Nitride Stainless Steel 5/8"x24 Th