My little sister is 20 years old and lives with my grandpa and my aunt, and today some guy scammed his way into the house to look around claiming they had won free carpet cleaning. He was asking about when people were home, and stuff like that. I think they were being scoured for a burglary, and the cops agree. My question is what can I legally lend to my sister? It's either a .40 pistol or an AK. She can legally buy the AK, but not the pistol. Another variable is my aunt. She is schizophrenic, and I don't know how that affectation things.