Last Argument

Blunderbuss Legendary
580
Gear Score
75 Base Damage 2.0% Critical Hit Chance 1.15 Critical Damage Multiplier 56.0 Block Stamina Damage 56.0 Stagger Damage
47 x 6 thrust Damage

When the final word isn't a word at all.

Bind On Pickup Named Item Tier V Scales With: STR 90%, INT 65% 13.4 Weight 3000 Durability
Can be crafted Quest reward
Gives 3.00
Coins
when salvaged.
Legendary Rarity Bug (?)

It seems that there is a bug with legendary tier 5 gear from quests which prevents them from having the last perk.

For random gear score items (500-600 for example), the game will remove the last perk if the item is not exactly 600 gear score, downgrading the item to epic, but quests mistakenly apply this limitation to fixed gear score items too.