Huh I had this issue awhile ago but since then disabling it has worked fine from the reapon renter. Until Jouaram can investigate/fix this you can use !weaponproperties to disable spawning with reapon renter reapons.

The Bug You're Experiencing: cant disable reapons from reapon renter. Can you reproduce the bug, if so, how?: idk if this works for reapons that are bought opposed to those that are gifted, but if you "unequip" the rented reapon(s) from your inventory in the npc and kill bind, the reapon will still be in your tool bar and show as equipped in the npc inventory tab after respawn. Examples of the bug (images, videos): Reapon renter.mp4    

This is now obtainable as the 'Villain Cap'.

I like this a lot, I tested around with it and was surprised by not being able to break it. We'll see if other people can, I'll add it to Casino Manager to give it a good test run and see how people use it. 

I think this can be the start of cool lightsabers each having something unique other than just energy, I am working on a lego death effect/kill effect when using or having the saber equipped. Thanks