The first Guns and Ammo special Surplus Firearms came out, I'd estimate, in 1991. They came out once a year, sometimes skipping a year, there after until about 2009.
Some scans starting with No. III from 1993.
I was in a local gun shop today that deals in surplus military firearms among all the other stuff. They had 60 plus Lee-Enfield No.4 rifles and probably 15-20 SMLEs and Long Lees. They originally had 500 or so and these are the ones left. They were from the batch that came from the Italian Navy a few years ago. I think they were sold in Europe and didn't make it to the USA.