Melee weapons are the strongest weapons in the game currently, and this mod makes them even stronger. Normal Reach only has 3 ranks, so the Primed version is a HUGE boost from the normal. It's also really worth mentioning that most mods with a Prime varient have 5 ranks at base (whereas all Primed mods have 10 ranks). This mod is what turns already strong melee wepaons like Galatine Prime and Atterax into complete room cleaners. This is the other half of the reason that the aforementioned pistols are the best.
The critical chance boost from this mod is utterly insane, and is half the reason that guns like Akstiletto Prime, Euphona Prime, and (Ak)Lex Prime are the best in class for pistols.
This is basically flat-out necessary for many builds, and is one of the most important mods you can have.
This is my personal list of all *Baro-brought primed mods in order from most useful to least useful.
