Hmmm, 8910 vs 10235 means your gun was only about 1,300 guns apart from mine in the production run. I've seem WMC serial numbers reported as high as 34,XXX, so I'm thinking mine might indeed be a first or second year of production gun if production started in 1989. Interesting. I'll definitely have to check that rate of twist now, as I have read in other posts that the 1:20-twist guns were the earlier production models and the 1:38 were the later. I'll be curious to see if anyone can reply with a higher serial number or any information on when production might have ended.