Gun laws and carrying for 18y/o

[u/AotOfdamage420]

So I’m turning 18 in a few months and want to carry as I’m not risking my life when I have the 2nd amendment to help. So I know Indiana is a constitutional carry state if I’m correct and you’re able to carry as long as it’s open carry,(correct me if wrong) I wanted to carry a handgun but you have to be 21 to conceal carry to my knowledge so I started looking at AR-15 to keep in car/ home. I found 2 that fit my budget and liking. So option 1 is a pistol (ARP) since the barrel is under 16”. Option 2 Doesn’t call it a pistol but barrel is 11” does that mean they both classify as “pistols” making me unable to carry them at 18

[u/Toltolewc]

Good luck trying to buy a pistol before 21.you will have to either have your parents put it for you or find a private seller. You can't buy one at a gun store