Badges update automatically and link to the mod page on MineUniverse.
This mod adds various (mostly) ranged weapons, derived from the technology available ingame. (String, pistons, gunpowder, firework rockets, redstone, ender magic, etc.)
Ideally this will also give extra purpose to the less useful materials (like gold and lapis) by using them as ammunition.
The full details can be found here. :)