My daughters boyfriend is 20 and has had his ltc since he was 18. He went into rual king 2 times now to buy a mavic 88. First time he didn't put it on layaway so had to redo paperwork because the serial number on what he was going to buy was sold...So the 2nd time he went in, he put the maverick 88 on layaway to avoid more paperwork. He says he wasn't denied but put on some sort of hold for 7 to 10 days. I didn't see any law saying you had to be 21 to buy a shotgun or rifle at tge current time.