"Real Housewives of Atlanta" star and mother of six Kim Zolciak-Biermann is in hot water after fans called her out for being a "hypocritical" parent.

According to Us Weekly, the family gathered in Miami to celebrate daughter Brielle Biermann's 21st birthday on February 26.

The eldest Biermann daughter shared photos from the birthday party on her Snapchat, and fans are furious after she posted a photo of what her mother and stepfather gifted her.

According to People, the 21-year-old was given a rose gold handgun. In a Snapchat video, Brielle looked hesitant to touch the gun and said:

"I don't want it! You bought me a handgun?"

Mom Kim responded by saying that she bought it because Brielle is moving out to live on her own and she could use the protection.

She said in a video obtained by TMZ:

"You're moving out so it's time to figure it out. ... It's not loaded. ... It's a special one for you, it's rose gold."

Brielle seemed to warm up to the gift idea when she posted a photo of the gun to her Snapchat a short time later.

But many fans said they were confused by the present; the "Real Housewives" star recently opened up about buying her younger children bulletproof backpacks after the devastating shooting in Parkland, Florida.

On February 14, she posted a photo of the backpacks she purchased to her Instagram page, along with a caption explaining they were her husband's idea.

She wrote:

I just asked Kroy what can we do as parents to protect our children everyday in this crazy sad world. He said, "best thing we could do for now is get bullet proof book bags" you know I just did!...

Now, fans are calling out the mom on social media for buying her eldest daughter a gun just weeks later. Some wrote on Facebook:

I honestly respected Kim when she posted a backpack that would, hopefully prevent a bullet from striking her children (and others). However, the irony is just repulsive!...  A gun? Seriously? This woman should stop trying to be her daughter's BFF and start being her mother.  Didn't she just buy her kids bulletproof backpacks? Hypocrite much!  Omg.... Thats a gift? And a gift to a 21 year old? Are you kidding me..? All that plastic surgery must of damaged their brain!  Are you kidding me? They think this is an appropriate gift for a 21 year old!

However, other fans gave the mom props for her decision to help the 21-year-old protect herself.

The Biermanns have yet to respond to the controversy surrounding the gift.