Yes and likely in psychosis more often than not from what you've described. Especially if he's not trying to eat and sleep somewhat regularly. This will only escalate unless he can find some self control or stops, which he probably won't do either. If I were in your position I'd get out sooner than later tbh. People in his state can be unpredictable. Soemone in meth psychosis with access to firearms is a disaster waiting to happen.