Ha! I just read Ravi Chopra's article on stock Autocockers last night as well as his stock '99 review - that's how I learned to identify a '98 from a
I have my classic mag I built from parts FS today. Airs up and fires. No problems as it was just built by me and I went through and changed out all seals.
I have the exact red/black fade sentinel myself. Awesome STBB marker. Probably the best blowback ever produced IMO. I am currently trying to sale mine