To add,
When you disassemble the pistol, check the recoil spring length against the barrel. Per Beretta, replace the recoil spring when it is barrel length or shorter. Longer than the barrel makes it ok.
Also, check the locking block. If it is the "generation 1" ( the ears are squared off where they meet the main body) I suggest replacing it with a Gen 3 (the intersection of the ear with the main block is rounded). Beretta USA lists replacement parts. Haven't checked in a while but I bought several lock block/spring/ guide rod sets for a very reasonable price for future use.
Also, if I remember correctly, the U serial number were military issue, an X serial number was Italian State Police, but it wouldn't surprise me to find Beretta selling one to the other without records kept for exportation purpose.
When you disassemble the pistol, check the recoil spring length against the barrel. Per Beretta, replace the recoil spring when it is barrel length or shorter. Longer than the barrel makes it ok.
Also, check the locking block. If it is the "generation 1" ( the ears are squared off where they meet the main body) I suggest replacing it with a Gen 3 (the intersection of the ear with the main block is rounded). Beretta USA lists replacement parts. Haven't checked in a while but I bought several lock block/spring/ guide rod sets for a very reasonable price for future use.
Also, if I remember correctly, the U serial number were military issue, an X serial number was Italian State Police, but it wouldn't surprise me to find Beretta selling one to the other without records kept for exportation purpose.