Technically-speaking, it's an Arts unit — that is, a device used to facilitate the casting of what others here have called "magic" — though in that regard, yes, one could consider it a weapon.

[There's an unspoken "yes I have bitch-slapped a motherfucker with this thing" somewhere in there. Gnosis does not look at Add; he merely sets about making weedkiller while the doctor takes a closer look.]

It runs on processed Originium, a type of fuel where I'm from, though in its unprocessed form, it can cause a disease known as Oripathy. Rest assured, were I to open my Arts unit currently, nothing untoward would come of it.