This is probably one of the flashiest mods out there for GTA V. Some mods add new methods of transportation to the game. Some mods add a gardening game mode. Some mods change the whole game into a police simulator, or an RPG. Some mods add power armor to the game.
This mod? This mod makes GTA V look the same as a Daft Punk performance if said Daft Punk performance had the yearly budget of the U.S. military.

The mod, simply titled Particle Guns, gives you 18 different particle effects to your shots. It really is a visual masterpiece. Possible the coolest looking effect is shown off first in the face of the "purple puff gun", which causes a massive neon-purple cloud to appear at the point of impact. The cloud has transparent tentacle like effects sprouting from its epicenter which are reminiscent of the northern lights. In case that ain't enough for you, there is always the "huge purple puff gun", which is the same but with amplified effects.