I'd love to find out how to start manufacturing AK74 Mags, seems like it might help get the price down if you can come out with one reliable and less expensive.
Find an injection molding business near you. Dies are gonna cost you some upfront $$$ but the mags themselves, maybe not.
I'd imagine you might want to have metal inserts withing the molding, or, around the feed lips like on a Lancer AR mag.
Thanks, Tech, you're a good man.
