"Inadvertently shot himself in the groin" could have been sticking the gun into his waistband. That, I understand, is the reason for the heavy "New York" trigger on a Glock. If you have your finger on the trigger (thereby taking the safety off) and put the gun in your waistband, you can easily shoot yourself with the standard trigger.

"What kind of charge?" Attempted suicide. Discharge of a firearm inside the city limits. Reckless discharge of a firearm. I'm sure there are other things he could be charged with.

Many people (especially those with little gun experience) have made the stupid assumption that removing the magazine empties the gun. Then there are the people that have all of their experience with S&W autos, Browning Hi Powers, Ruger Mark IIIs, and other guns of that type stupidity, that have magazine disconnects. Then they get a gun without one, and based on all their experience, they think pulling the magazine makes it safe, and they don't even check the chamber.

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I always take precautions