Picked up a sporter 1917 last week at a LGS: excellent metal, front sight intact, sn 852XXX (1918 mfg). My question is about the High Standard barrel; is it a WWII replacement? It is the green parkerized finish while the rest of the rifle has a beautiful dark bluing. How many 1917s got this treatment and who were the rifles issued to? Bright bore, headspaces on no go and field gages. Paid $235