Board Thread:Off Topic/@comment-25396609-20190630171456/@comment-25396609-20190802030100

Recipe for a flashbang:

Pinch of Fire Dust for ignition (probably one of the cheapest kinds; we see it everywhere including home usage.) The amount you would need I would count in pennies by our world's currency.

Magnesium and/or Aluminum: $16 for 100 grams (magnesium)

Potassium Nitrate (Saltpeter): $20 for 500 grams

And an appropriate casing that can be cheaply mass-produced. Even moreso if the user is a skilled machinist who can do it themself and recycle used ones. Wiith Remnant's level of technology I would price them pretty low since I suspect they have ready access to Direct Metal Laser Sintering, otherwise it's just not feasible for students to ALL make their own, quite complex weapons.