Just going from memory they were 1.5mm or 16 TPI. I just can't remember. I did one of the new tactical rifles not so long ago and it was a really stupid pitch. M18x1 sticks in my head. But the old ones were fairly coarse thread. You will probably have to end up pulling it to tell for sure. Schultz & Larsen is just not something we see every day. Or every decade for that matter.
When I was a kid. I had the stick. I had the rock. And I had the mud puddle. I am as adept with them today, as I was back then. Lets see today's kids say that about their IPods, IPads and XBoxes in 45 years! Rod Henrickson
Posts: 2542 | Location: Edmonton, Alberta Canada | Registered: 05 June 2005
You might try addressing this same question on NitroExpress. It is full of European participants, among them several Scandinavians with experience with S&L firearms.