Factory New - Same as used in M18 issued to United States Marine Corps (USMC).  M18 Serial Number Blacked out on photo. This FCU can be used in any 9mm/.357/.40 grip module with manual safety.

(1) Sig Sauer P320 M18 Fire Control Unit (FCU) 9mm {Manual Safety}

(1) Takedown pin/lever

(1) Sig Sauer 17rd Magazine