Legal Question in Criminal Law in California

Why risk it?

I'll give a serious answer to what I take to be a serious question.

A felon can not even be in the presence of firearms or ammunition without risk of being charged with a felony. For a felon, it is a serious risk for him to be even in the presence of guns in a house, and especially in a vehicle [and certainly not his own!]. It would require they be properly and legally stored and transported in a locked container, unloaded, in the trunk, etc. The problem comes up while the others are shooting, when the felon is 'in the presence', which could be interpreted by law enforcement as 'possession'. Ownership is not required.