Argument: Registered guns can often be accessed by non-registered individuals
Extended argument and supporting evidence
Typically, gun owners can keep a gun in their home where and how they like. There may not be a requirement to keep it locked in a vault. This means that residents of that home that are not the registered owners of the gun can gain access to it, which would render the legal ownership and registration of that gun irrelevant. All kinds of individuals that might not be eligible for gun-ownership, might have access to these guns, and be capable of using them in violent crimes. The important point is that the “registration” and “ownership” of the gun does not prevent access to the gun, and therefore may prove irrelevant in regards to the supposed social protections that such legal ownership is claimed to provide by many gun-rights activists.