I used to have it bookmarked, I’m not sure if I still do, but way back when in the Kickstarter there was someone who made a ton of kickass weaponry, including a Chainsword from 40K, as well as Kirito and Asuna’s swords from SAO along with a handful of other items. Can’t for the life of me recall who it was though…
Found it: Yangzhoui's Replica's