Looks to me the striker rod is 03A3 and the mid band certainly is, the bolt sleeve does not look original either. The polished bold could well be original to the rifle though does the bolt have a 'small' or 'large' gas escape hole, it was probably supplied with a 'small' gas escape hole, however in a bunch of bolts which were part of the NZarmy's Remington spare parts I saw both large and small hole bolts. nice to see it still has the Remington 'high bump' handguard. Here is my NZ Remington '954' the original GG stock is cut down but still bears the faint NZ markings.
Attachment 76920Attachment 76921