A gun-loving social media activist was shot and wounded Tuesday by her 4-year-old son while driving.

Investigators said Jamie Gilt was driving a four-door pickup truck hauling a horse trailer about 3 p.m. when the boy somehow managed to gain access to a .45-caliber handgun and shoot her from the back seat, reported the Florida Times-Union.

A Putnam County sheriff’s deputy spotted the 31-year-old Gilt behaving frantically inside the pickup, which was partially parked in a travel lane on Florida 20, authorities said.

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The bullet passed through Gilt’s torso, and she is expected to survive.

Deputies said the boy was not strapped into a booster seat, but they haven’t determined whether he was strapped in at the time of the shooting.

Gilt, of Jacksonville, frequently posts about her love of guns and her views on Second Amendment rights, as well as her support for Republican presidential candidate Ted Cruz and racist propaganda.

In fact, she boasted the night before the shooting on Facebook that her “4-year-old gets jacked up to target shoot the .22,” in response to her post suggesting that guns are a better response to a burglary than calling 911.

The woman apparently maintains a Facebook page called “Jamie Gilt for Gun Sense,” which has been deluged with critical messages since her accidental shooting.

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She also shared a Twitter post last January about a new handgun — which she described as her “new toy” — she was excited about receiving.

Got to play with my new toy today! Time to clean it! pic.twitter.com/1lkYo8b3sh — jamie gilt (@jamiegilt) January 24, 2015

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The shooting remains under investigation, and deputies said Gilt could potentially face charges in the incident.

“Those questions center around how is the fire arm secured? Where was it carried in the vehicle? And exactly how did the young boy come in possession of the firearm?” said Capt. Joseph Wells, of the Putnam County Sheriff’s Office.