number5 mark 1 enfield 303 british jungle carbine
See the link below to a good Wikipedia article on the Lee Enfield. There are several DIFFERENT .303 Enfield rifles.
Up to the 1950s, it was the British Enfield 303 caliber rifle.
Try Springfield Sporters they have a good selection of Enfield parts.
If still in the original configuration, these were chambered for the .303 Enfield, aka .303 British.
It is a British .303 Enfield military rifle. Produced at ROF Fazakerly, on the outskirts of Liverpool, probably about 1952. This was the last of the .303 Enfield military rifles.
Standard issue rifle for British Commenwealth troops (which included the Anzacs) was the .303 calibre Lee Enfield rifle.
Bolt action military rifle, most commonly in caliber .303 British.
303 was the .303 inch diameter bullet that was fired by the Short Magazine Lee Enfield- or SMLE. Standard rifle of the British military from 1907 to the1960s, and still in limited use today.
".303 British" is usually used to denote a caliber, as opposed to a specific firearm. Perhaps the most famous rifle in that caliber was the SMLE, which is the abbreviation for Short, Magazine, Lee Enfield. There were several marks and models of British military rifles that originated under that designation, all in that caliber. They were made from prior to WW I, and continued through the Commonwealth nations (and former Commonwealth nations) into about the 1960s. So, yes, the caliber .303 British and the Enfield name are linked- but Enfield is not the full name of the rifles and carbines. Run a Wikipedia search on SMLE for some more reading.
The ,303 Enfield British rifle cartridge is fairly popular, Most well supplied gun shops will carry this ammo, and with adequate proof of age, can be purchased from on-line suppliers.
The Lee-Enfield .303 Mk.1 and other variants to the SMLE Mk.III.