Armalite has their Gen II magazines for the AR-10B rifles IN STOCK. These are the ones that sort of look like M14 mags. The 5, 10, 15 and 20rd versions are $35 and the 25rd versions are $42.
https://armalite.com/shop/individual-gen-ii-ar-10-magazines/
https://armalite.com/shop/individual-gen-ii-ar-10-magazines/
