Original Swede M94 and 96 were made at Carl Gustaf Armoury for Swede military - (except for the earliest ones made by Mauser in Germany). I believe that most approved FSR rifles were also done up at CG armoury. Husqvarna made sporting rifles - was a private enterprise - not a gov't facility. They made hunting rifles - often nearly "dead ringers" and interchangeable parts with the Swede military actions of the time. In WWII, Husqvarna was contracted to make M38 rifles for Swede military - although also made some M96, I think - a friend has borrowed my "Crown Jewels" book where this stuff is detailed. Sounds like your Husqvarna is coming with holes drilled and tapped on the centreline - as if for scope bases - would be total bonus for you if that was the case - likely will find modern stuff that will fit and work. Those brands I mentioned in Post #4 likely fairly old - not sure when they were approved, but some likely in the 1920's or 1930's.
I do own perhaps a bit "odd ball" CG63 pattern rifle, but is made by Norma - so Norma was an "approved" entity to build CG63 rifles out of a customer's rifle for FSR competitions - however, it was only ever drilled and tapped for convention scope bases - front receiver ring and rear receiver ring - came to me as a rifle set up for scope use - I do not know if there was ever an aperture sight on it, when it was in Sweden. It does have a more or less standard military front sight base, on the heavy Norma target barrel, but there was no front sight insert in it.
FYI - once the barrel is removed, I know of no way to tell the difference between a Swede M94, M96 and M38. All were #### on close. M94 and M96 were made at the same time, in the same CG arsenal, until at least the 1930's. CG made M94 had a turned down bolt - an expert might be able to tell the difference from that turned down bolt on M94 with one from the Husqvarna M38 - apparently I can not. For decades (?), CG Arsenal was converting existing M96 long rifles into M38 pattern rifles - kept the straight handle bolt from the M96, but barrel and stock were shortened. Some refer to this conversions a M96/38, but Swede military did not differentiate Husqvarna made M38 and CG conversions - all were M38 as far as they were concerned. And getting pretty much impossible to differentiate between CG and Mauser actions and Husqvarna made actions - except for stampings and markings - sometimes the serial number and inspector's initials can deduce what that action was originally - M94, M96 or whatever ...
What some will find confusing is most of this was done before the 1968 USA law requiring a serial number on the receiver. So some Husqvarna sporter rifles have serial number on the barrel. Unscrew that barrel and nothing on receiver - now screw on readily available new old stock replacement barrel and no number on barrel either. So is nothing on barrel or receiver. Think of the children!!!