Chest - Black Talon Hunter's Body Armor [black Talon Flashpoint - Can't recall which boss drops it]
Legs - Prototype Mabari Laminated Legguards
Boots - Mercenary's Boots
Hands - Tempered Laminoid Gauntlets
He's only level 20, so I'm not sure knowing the legs, boots, and hands helps much...they're Blue and Green items. I haven't found permanent Custom items to replace them with yet, but I'll be keeping my eyes open for the orange items that look like them...