7000 were reportedly produced and sources state that 6200 were used in production with the remaining 800 held back for use as replacements. If you go by these numbers, the serial range should be from 200001 to 206200 but many straight stock rifles fall outside of this range so it's hard to state for sure what the cutoff was. Some stocks are obviously replacements as they are sometimes seen on M39's other than Sako's. I have a Sako straight stock that is PL marked and serial numbered 208410 and it sure looks like the stock rifle combo has been together for a very long time. Was this rifle originally produced with a straight stock? I can't say for sure.