Bayonets that are recorded are now: 41 with rifles, some numbered, some unnumbered
So far, if your rifle is 4999 and below...it should NOT have a stock disk. Conversely, 5000 thru 6450 (which is the last number that I have) should have the disk on the left side of the stock. There are some anamolies credited to replacement stocks. There are 5 of these that don't fit. 1 has a disk that shouldn't and 4 do not have disks that should have them and the s/n's are all spread out, so, they definitely are anamolies to the norm.
Ol'Duke


