I have a lee enfield .303 bolt action rifle my father gave to me when I was a kid. On the right side of the receiver is stamped a crown with the letters gr under it then under that is enfield 1922 then under that is SHTLE then under that is the numeral V. The rear sights are a sliding ladder type. The detatchable magazine is the usual 10 rounds and it has the magazine cutoff lever. The gun is in decent shape ie. bore and wood. The gun has other similar features of mk3's and 4's. I have read an article in the past referencing this model as an experimental mk5. Any info would be appreciated.