Its gotta be a belgium gun it has a wierd symbol with the letters PV on the side of the reciever i have an #uto 5 12 gauge belgium with the same thing on it but i could not find any thing on a 4 diget serial number with the letter A above it every one says that it should have an S in the seial number if it is a sweet sixteen but it also dont have the safety in front of the trigger it is behind and i havent seen any with the same safety as mine