Half-Truth ^^^. When the government agents decide they have Probable Cause (PC) to secure a warrant, having guns is something all LE is concerned with, for many of us have attended funeral services of men and women murdered by firearms while serving and protecting the community.
And yet, in states that have universal registration, pre-checking the gun registry is not part of the SOP for serving a warrant.
Criminals who obtain weapons illegally will not register them
Reckless drivers will obtain cars by theft or purchase and not register them. Which is why a bill of sale will be sent by the seller to the St. Dept of Motor Vehicles. Why should a gun be any different?
/—-/ Because owning a car is not a right, owning a gun is.
Statement: "Because owning a car is not a right, owning a gun is"
Response: Not all rights in the Bill of Rights are unlimited. Scalia spelled that out in Heller, and laws to restrict certain Felons, those who have been detained as a danger to themselves or others, do not have that Right.