Several of the items you are offering for trade are, in fact, modded items. Specifically, the following:
Op8-Sticky Lungbomm Quasar (slag)
Item 1 is Maliwan and therefore cannot have the Murduring Prefix, since Murduring is a Bandit prefix. Item 2 cannot be Explosive (No such thing as an Explosive aka No-element Norfleet) and item 3 cannot be Slag since the Quasar grenade mod is Shock only.