This lightsaber was constructed by Miya Af Ath during her membership of the Jedi Order. A green Kyber crystal powers its blade, with a hilt constructed of polished durasteel and, strikingly, wood. Over time and use, the oils of the hand have stained the wood dark, and the shimmer of the metal has become rough and scratched. Has a belt-loop, for belt carrying.
A lightsaber in the hands of a darksider is legal anywhere one can get away with carrying it. Any legal issues stemming from its carry would likely revolve around run-ins or confrontation with the Jedi Order, of whom Miya was once a member.
Taken to a planet rich in Kyber and made to take a crystal that called forth, Mi constructed a lightsaber at the direction of her Jedi Master. Without the Order, however, its intent merely remains as a weapon: A thing with which to do battle, to defend, or to maim if need be.