I really wonder if he'll be force sensitive too, considering he didn't do all that bad with the saber given his first and second time using it, plus his change of heart at killing the villagers at the beginning unlike the rest of the stormtrooper horde.
I mean, he grew up into service and somehow still knew it was wrong.
Don't you have to be force sensitive to even use a lightsaber? I thought him being able to actually use it was meant to show that Finn had the potential to be a Jedi. I don't recall 'normal' people being able to activate light sabers in the series.