No drill-and-tap civilian mods.
You know that the rear bridge diagonal tapped holes were approved by the Swedish military? There's a dated technical order approving their installation by FSR approved gunsmiths. To some the diopter sight holes are desireable if they want to mount Swedish diopter sights. To others they represent a post-production modification that detracts from originality. To each his own but it isn't exactly accurate to refer to the tapped holes as "civilian" in the same way one would refer to the drillpress work of Bjubba, the Swedish cousin of Bubba. For the most part if you can snag a nice diopter sight set its well worth having those tapped holes already present. One of the diopters used by FSR clubs was the Lyman 48 that mounted on the right hand side of the rear receiver bridge. Someone less knowledgeable might mistake that for a Bjubba yob. Its not.
Its sad to see $350 being called a fair price for a nice m/96. It may reflect reality in today's market but it leaves behind all the young guys with young families and children to feed. They'll never be able to get into things Swedish with those prices. When nice m/96 were $40-50-60 even $90 you could find a way to scrimp a little. You could even afford to buy a new one every month or couple months. That's how the current Swede gluttons got so many rifles. There are some out there in milsurp collector land that have 50-150 nice desireable Swede m/96 and some, I hear tell, who have dozens of m/94 carbines each approaching $800-1,000 apiece. Harder to store than stock certificates and a little less secure than gold bars but a pretty good investment if you can afford to store them for 10-20-30 years.
I have one $40 m/96 that was a 5/fer in 1988. Its pretty nice, too. They were cheaper and less desireable in 1988 because the rear bridge had 2 tapped holes for target sights. Boohoo. I could get $275 for it in less than half an hour on the Trader forum. My 1920 SA-marked m/96 with unthreaded barrel and untapped rear bridge was $90 in December, 1997. Its NRA Darn Nice+ with a sharp #1 bore. $350 in under 15 minutes on the Trader. I've facilitated the sale of two m/94 carbines on the Trader forum. One was $750 the other was $1,200. Both sold in under 30 minutes.
But I have frequently bemoaned the fact that young collectors have been squeezed out of the Swedish milsurp market. Don't take this as meaning I won't make huge obscene profits when I sell some of mine

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Dutchman das kapitalist