Hi - These are pics I did back in'20, and I saved the link to the thread on sksboards .com, too. Link here - http s://www.sksboards.com/smf/index.php?topic=43825.0
I can't find the link describing the 'shoulder mod', maybe it was just in a thread I can't find. I've done it to all my mags and No probs inserting so that may be all it's good for, or there may be a second reason. If I find info I'll Update.
HA ! - UPDATE same time,same station - I found the 'shoulder mod' - it's for Russian stocks (which I had when I found this mod) but works OK in my Tapco with Russian action - no reason why it shouldn't , I guess, and is also OK in the Chinese FT that's in my Tapco
Now. - http s://www.sksboards.com/smf/index.php?topic=127837.0
Another site with Tons of Info is Yooperj .com ; and at http s://votefordavid.########.com/search?q=sks
V NOTE 'slope' on the back of mag
These last Two are for 'easing' the insertion of the mags into the stocks - 'round the front shoulders'
