Is "unusual" for sure - not much that I see matchs up to the markings on a M96 here or in the Crown Jewels book. Might be a possibility that someone used another 1893 pattern receiver, and straight handled bolt - might have used Swede safety, shroud, cocking piece - they would all likely fit. Same with the stock - if it is an original Swede m96, the six digit receiver serial number would be stamped into the main stock in the chamber area - under the barrel - and also on the underside of the hand guard - above the barrel. Most Swede parts made at Carl Gustaf Arsenal will also have a "straight up down" Swede Crown" - when the part was made by a sub-contractor - often by Husqvarna - the Swede Crown will be tilted about 45 degrees left or right. I do not know how the various piece were marked on the original rifles made by Mauser for Sweden. Most visible parts made by Carl Gustaf Armoury will have the last three digits of the receiver serial number on them - most identical parts by Husqvarna often did not. Of course, is all based that the original Swede receiver has a six digit serial number - usually preceded by the initials of the Inspector that approved that rifle for service by Swede military - serial number usually along left side of front receiver ring / left wall of receiver. Is typical for the Swede military rifles to have a crest on top of the front receiver ring, which indicated who made it and what year - so Mauser, Carl Gustaf or Husqvarna all made military rifles at various times.