Gun advocate Cargill's stepdad shoots, kills intruder at Georgia home

Snellville, Georgia: a little town outside of Atlanta. 
Early Friday morning around 4, an unwanted guest tried to break into a house there.
Back here in Austin, gun rights advocate and owner of Central Texas Gunworks, Michael Cargill -- says his mom and stepdad live there -- bad news for the intruder.

"My Mother gave me a call.  And she was crying on the phone and that really scared me.  She said 'what's wrong, what's going on?'  She said 'somebody broke into the house and your Dad had to stop them.'  And heart stopped," Cargill said.

Cargill made sure they had called 911 and then gave them his expert advice.

"I don't want them making any statements at all and saying the wrong thing and getting themselves in trouble," Cargill said.

Cargill started working on getting an attorney and then realized how big of a deal it was in Atlanta.

"I opened up my phone to Twitter and my goodness, it was like there were 3 news stations outside my parents house," Cargill said.

According to Gwinnett County Police, the intruder used a ladder to get to the second story window.

"The husband retrieved his firearm and went to investigate the sounds.  When he walked into the master bathroom of the home, found a male climbing through the window.  The husband fired one shot," said Corporal Deon Washington with Gwinnett County Police.

That one shot struck the guy in the face.  He didn't survive.

"They are well within their rights of using deadly force to protect their home," Washington said.

"They're really broken up by this...having to stop someone and take someone's life.  It changes you," Cargill said.

The reason Cargill became a champion for the second amendment in the first place is because of his Grandmother.  He says at age 70 she had decided to go back to college to become a nurse.   As she was coming back from the library, Cargill says she was mugged and raped.

"From that point on, I decided I wanted to make sure that every female and everyone in their family had the tools they needed to protect themselves to stop those threats," Cargill said.

Cargill says there was a time his parents didn't even own guns.

"I purchased mine first.  So I got with them and we've gone to the range and practiced at the range.  They've come to Texas, they've taken my handgun license course.  They're both licensed holders," he said.

Now Cargill is thankful they wanted to learn.

"We did not want to become victims anymore.  And I'm so glad today justifies what I did back then.  Because my parents had the tools they needed to protect themselves and stop that threat," he said.