Not sure about this one

New Mexico cop stops a guy with a concealed gun, arrests him for not having the required permit. He turns out to be a felon.
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Does Concealed Gun Give Cops Right to Search You?

Submitted by The Volokh Conspiracy on Dec 28, 2011

By Orin Kerr

A recent decision of the District of New Mexico, United States v. Rodriguez, 2011 WL 6739498 (D.N.M. Dec. 8, 2011) (Browning, J.) , addresses an issue of Fourth Amendment law that touches on Second Amendment concerns: In a concealed carry state, does police observation that a person is in possession of a concealed weapon create “reasonable suspicion” justifying a stop and frisk for a potential violation of the state’s concealed carry law? The court concludes that it does, although that conclusion strikes me as incorrect.

The facts of the case are complicated, but here are the basics. A local 911 dispatcher received a call from a woman who reported that she had just seen two employees of a convenience store show their handguns to each other while inside the store. The caller indicated that both of the employees were carrying the guns on their persons. Officer Munoz was dispatched to the convenience store, which was located in a high-crime neighborhood and which Munoz had visited in response to police calls many times before. Munoz entered the store and saw an employee restocking some products. When the employee bent over one of the shelves, the officer could see a handgun tucked in the waistband of the back of his pants. The officer asked the employee to step outside, and he grabbed the gun from the employee’s waistband for officer safety purposes. Once outside, the officer asked the employee if he had a permit to carry the gun. The employee, Rodriguez, said he did not. The gun turned out to be a loaded Smith and Wesson .357 magnum revolver. The officer arrested the employee for violating New Mexico law on carrying a concealed loaded firearm, which states in relevant part:

30–7-2. Unlawful carrying of a deadly weapon.
A. Unlawful carrying of a deadly weapon consists of carrying a concealed loaded firearm or any other type of deadly weapon anywhere, except in the following cases: . . . by a person in possession of a valid concealed handgun license issued to him by the department of public safety pursuant to the provisions of the Concealed Handgun Carry Act [29–19-1 NMSA 1978].
B. Nothing in this section shall be construed to prevent the carrying of any unloaded firearm.
C. Whoever commits unlawful carrying of a deadly weapon is guilty of a petty misdemeanor.

It turned out that the employee had a felony record, and he was therefore charged in federal court with being a felon in possession. He has here challenged the “stop and frisk” which lead to the exchange in which Rodriguez acknowledged that he had no permit, thus leading to his arrest. Whether the “stop” was lawful depends on whether the officers had “reasonable suspicion,” based on specific and articulable facts, that the employee was engaged in illegal activity. Whether the frisk that retrieved the gun was lawful depends on whether the officers had specific and articulable facts that the suspect was armed and dangerous.
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Read the whole thing.

The question is - were the police justified in stopping the guy simply because he had a gun?

I am not sure about the law in New Mexico if the "concealed" gun becomes exposed. Some states make that an offense in itself. If this was the case, the officer's actions would be justified.

In Wisconsin, open carry is legal, as is concealed carry if you have a permit. The law is silent about "flashing" the weapon inadvertently.

Will we have a similar case here? Time will tell.

H/t Alphecca