| NPM | 1535429 | MCM | I am looking for this serial number because I would like to know if the barrel date is correct for this serial number or whether it was added later as part of an arsenal rebuild or by someone else. I would also like to know the approximate build date of | Underwood barrel dated 3-44, no import marks. |
| NPM | 1955104 | ewallover | I am looking for this serial number because I want to date my newly purchased M1 and am trying to determine if the Marlin barrel is original. Marlin barrel marked with "P" and "4 4" below the hand guard. Condition of the rifling is very poor. Would lik | |
| NPM | 1966960 | Greensprings | I was gifted this National Postal Meter rifle. The barrel is marked Marlin. The rifle is an import by C.A.I. Georgia, Vt. Marked very faintly on the underside of the barrel. The serial number of the rifle has been stamped on the left side of the butt stoc | |
| NPM | 4151040 | user@CMP Forum | I am looking for this serial number because... I would like to follow its history | |
| NPM | 4214094 | MJF | Purchased at CMP South Store as Service Grade. Has IBM barrel; appears original. | |
| NPM | 4229543 | user@CMP Forum | I am looking for this serial number because...I just purchased the item and am interested in whatever info you can give. | |
| NPM | 4425899 | DEM | I am looking for this serial number because...I own this M1 carbine and would like to follow it's history. | All components appear to be correct NPM aside from barrel.
No rebuild marks on stock. |
| NPM | 4427426 | user@CMP Forum | I am looking for this serial number because this was my great grandpas gun during the Korean War | |