Forum member Arkray wrote a nice guide on how to get your free Bless online weapon. You have until May 31st Korean time to redeem and everyone can get one, so go for it! The only restriction is one PER ACCOUNT, not per character. Redeem it wisely.
They are giving away those weapons in celebration for the 100 days of bless, they are awesome for a starter/alt, don't miss out:
Be warned: Only one claim per account, not per character, and the weapon goes to the first character you login after you have claimed your reward.
Here we go:
See More: http://bless-source.com/forum/index.php/Thread/13460-Free-level-30-epic-and-level-40-legendary-weapons-giveaway-don-t-miss-out/
I won't be at the game until later tonight, can take some captures and put them here if no one did, you can find them in the crafting window, they are the orange Bless weapons made with level 40 pvp medals.
But to make an idea, the level 30 purple weapons seem to be a little weak, someone showed me a level 30ish blue weapon from main story quests that was better.
The level 40 orange weapons are nice, they are better than the level 44 purple weapons and sightly worse, nearly on par, than the tier 1 level 45 purple weapons that you can get on the level 43 dungeon or with pvp tier 1 medals.
For people that isn't much into sieges or dungeons they will be better than their main weapon.