Talking to a guy today with a few rifles for sale. He has an Enfield No. 4, reciever stamped "No.4 MK I (F) 1949. I'm guessing the "(F)" means it was made in the government factory, in Fazakerly? At $150 it seems like a good buy. Any thoughts? Anyone have any experience with the Enfields, positive or negative? And how difficult is it to find the .303 ammo? If the ammo can be found, what manufacturers are making it? Thanks in advance, brad.