U want the QA version - only, back then, there was no other versions of the p99. There was just ONE. So, they didn't have a name for it at that time - it was just the "P99" - when they came out with DAO and QA versions, then the original version got the name "A/S"
Go check the walther forum - a member named "uncut" is a Walther encyclopedia. U may have to try to buy from Earl's repair service, if ya want a QPQ - it will not be cheap, however