Under Aged Person Attempting to Purchase Handgun

I have a G27 for sale and an under age person scheduled to meet to buy. To their credit they admitted their age via text prior to meet. This person's phone number is (479) 208-0136 or (479) 275-8570 they said they were from Fort Smith, Arkansas.I don't know if they are male or female. I do know they are convinced they can purchase a handgun and ammo at 18 years of age through a private sale they even cited Arkansas law. I informed them that the state of Arkansas is very clear on this law. NO ONE under 21 years of age can purchase or possess a handgun or handgun ammunition unless said ammunition is used in a long gun in their possession at the time. It doesn't matter if we agree with it or not, that's the law. According to this young person they have attempted to purchase on here prior to this attempt and got denied by the seller. I held the gun as "pending" for two days and just hours before the meet they told me their age and admitted they had been turned down before and didn't want to make the drive if age was an issue. Just a friendly piece of advice, make sure you indicate 21 and over on your handgun ads. I know it's on them to follow the law but that won't satisfy the law when they track it back to you.