My problem is I've bent the steel ,and I have not got each side to line up corectly yet.
The drawing is layed out for the folds in the mag well,an the trunnion
support.You do have more than one bend to make the mag section.
If you have a kit,you can make your own drawings.You do need
a mag,trunnion,feed ramp.(you can make your own feed ramp).Mic your
kit an order some flat steel stock.4130 stock.Aircraft Spruce.com
Up date,Ive made 4 flats sofar.I'm still working on the spring back from the 4130.
Made new jig from angle iron,an turned a new round stock.Will see what happens.
Always accepting input ,thanks AL