LEE Enfield rifles, in .303 British were the standard military rifle of British Commonwealth militaries (Britain, Canada, Australia etc. for a very long time. The number 4 Lee Enfields were a WWII item, not WWI.
I bought my #4 in about 1962 for 25.00. I took it to high school (no swat team appeared!), and shortened the barrel a bit and smoothed out the machining marks on the barrel that were so rough that it was literally possible to file your fingernails on them, and later did some serious stock modifications. It is now my "bear repellent".
I live in BC, which does not actually stand for British Columbia. It is an abbreviation for "Bear Country." We have lots of these critters, both black (which come, incidentally in several colors other than just black), and grizzly. I have encountered bears while carrying this firearm, and on a couple of occasions when carrying only a fishing rod. I prefer the rifle, with which so far I have only had to shoot one bear. The fishing rod would not have worked at all. Thankfully, I did not have to try on the grizzly with cubs (!!) that I encountered without the gun one day. I came pretty close to some other grizzlies at other times when I did have my shootin' iron, and I was greatly comforted by its presence.
My Lee Enfield is pretty accurate with the issue peep sight, and is beyond bomb proof durable. Perfect for the job.
Those spike bayonets would have fit my rifle perfectly until I removed the attaching lugs when I shortened the barrel.