Couple of nice builds Edward!
I ended up with a few shaved bolts from Lkermit and put one in my Shernic as well. I modified all my duckbills lips, except the 75 round Korean drum, to accept strippers too. But since I'm a Kali occupant and limited to 10 without registration as an AW, but the chassis is ready for big mags. It's kinda of beatch to change.
Where I'll most likely use the mags is on a modified Drag stock build in the works, mainly because the stock mag replacement is simpler. It'll have some sort of glass, I've got ATI and Choate furniture to play with. When I get the bits together, I'll see what fits better. The last of my shaved bolts is on the way to "the SKSguy45". PAX