I see StonedSoldier already answered your question but I just want to add a couple things. In this case when we talk about "weapon level" we aren't referring to the weapon's EGO level which is the minimum ER your character needs to be in order to use it, we're talking about
the experience bar that fills up on each individual weapon. Once that XP bar is full on that weapon, you no longer gain XP for that
base weapon skill on your character.
Why are you so angry and condescending all the time? I think plenty of people here have played "good MMOs" on PC before (myself included) and we like that Defiance doesn't have traditional endgame because traditional endgame is complete bulls**t.
Grind this endgame raid to get the full set of gear, then stroke your epeen and grind the next endgame raid to work on
thatfull set of gear. Take a moment, stand in town, let noobs stroke your epeen for you as they inspect you to see what that supercool life affirming legendary sword you're holding is, then grind the same raid because you don't have the full tiered set so you can't get a group for the next raid.
You clearly hate the game, you should probably stop playing before you give yourself an aneurysm or throw your computer out the window in a fit of rage and kill someone's dog so they send you to anger management therapy. Or do you just need some love in your life?