5.56, 300 Blackout and 300 HAM’R mags are polymer mags from Thril, unless shipping into a state with capacity restrictions
9mm magazines are a Pmag wih the MEAN Arms Endomag
224 Valkyrie, 350 Legend, 7.62x39, 65. Grendel, 6mm ARC, 450 Bushmaster and 458 SOCOM are C Products Duramag magazines.