Just created a "Double" Legendary without Mods! Some, if not most of you may know the Unique Machete "Kremvh's Tooth" is the only Legendary/Unique who's effect can be moved to another weapon.
Machete melee weapons at Fallout 4 Nexus - Mods and community
Legion Machete Standalone at Fallout 4 Nexus - Mods and community
Metal Kremvh's Tooth from Fallout 4 (Unique Machete) | RPF Costume and Prop Maker Community