Board Thread:General Discussion/@comment-212.56.135.17-20160525143405/@comment-28398720-20160601174907

they'd have no way to know how to make bullets, keep the gun in working conditions.

Exactly, this was highlighted in the show when only Raven and Jasper, who were schooled in the related sciences, were able to bring their arms into working order.

Grounders don't/didn't use guns because the MM threatened to wipe them out over the last 50 years if they did

Today 99.99% of people don't know how to use swords and bows. Does it matter why? they just don't.