To answer your question: I am too lazy to go into further details. Tech hasn't devolved as GRAM has been concerned (but they live in perpetual martial law). The rest of the world is a Mad Max funhouse where you're lucky if you have AKs and factories. Magical gears are crafted. The ones dones by witches and supernals have better enchantments but are quite old-fashioned. Weapons don't turn magical, they're made.

GRAM's enchantments are usually more limited due to both lack of magical users and magical resources, but they're high tech.