The earliest No.4Mk.2 rifles were produced in April 1949 if memory serves. Fazakerley built lots of No.4Mk.1 in 1949 also which is what the OP's rifle is.
The earliest No.4Mk.2 rifles were produced in April 1949 if memory serves. Fazakerley built lots of No.4Mk.1 in 1949 also which is what the OP's rifle is.