If I were running a gun and pawn shop; (I grew up working in the gun and pawn business in Florida), and had a fair amount of milsurp rifles coming in, I think I'd invest in some good reference material. We certainly had a great reference library in the shop I started in as a kid. As far as Enfields go, why not invest the $100 in Ian Skennerton's "The Lee Enfield Rifle
" so you have all of these questions answered at a moments notice? I have them in stock or you can get one direct from Ian's website. Just a thought.