Interestingly, New Mexico's law only requires background checks for private sales, i.e. transfer of ownership for something of value in exchange; not borrowing/loaning. Borrowing a gun is allowed as long as ownership is not granted or anything of value is exchanged. This makes the Hatch chile state unique in one respect. But then again, gun stores are closed down by the governor's dictatorial fiat, so lot's of loaning going on right now.
Missoula, Montana, tried to ban private gun sales, but was smacked down by the state supreme court over preemption of local gun laws.
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