My [20m] Friend [20m] Is Giving Me Serious Mass Shooter Vibes And I Want To Know If There Is Anything Possible That Can Be Done In Preventing Him From Buying A Handgun.

So a buddy of mine that I've been friends with for years has recently been posting bizzard and somewhat off content on his instagram stories. I want to know if there is any type of legal loophole that can prevent him fro buying a pistol/rifle if I alert the authorities in time.

So to give some backstory, my buddies Kevin [20M] and Gary [20M] are two guys that I've known since middle school. My relationship with them over the years has been like a rollar coaster, having its ups and downs. The main person I want to focus on in Kevin but Gary is worth mentioning for reasons you'll see below.

A character profile on Kevin is that he seems like a good but he's kinda a bum. Imagine that one friend that didn't finish highschool, always bums money off of others, smells, and just fails to be an adult. Like he doesn't even have a driver's permit. He's a complete loser who I've stopped hanging out with simply because of how ignorant he is of most things in the world and how he is basically like a stepping stone.

As for Gary, he's a fellow friend that has autism and is pretty easy to manipulate seeing as how Kevin has turned him against his mom, and tried to convince him to move out due to his "overbearing" mom even though an apartment in our area is going to be a lot more than what Gary makes in taking care of his mom..basically someone else that also fails to become a proper adult. He might look good on the surface (car, DL, and finishing college) but lets himself get manipulated too much and has no idea what he wants to do with his life as technically his father (who is now dead) made him go to college.

Now the story, recently Kevin has been posting strange comments on far right posts, and posting far right content himself. A lot of his story posts are full of bigoted hatred and while yes, that isn't a primary concern, it's the certain type of comments/posts that I want to focus on.

He has stated that he cannot wait till he turns 21 in order to "express" his 2nd amendment rights, claims that when girls turn 21, they are happt because they can drink legally while when guys turn 21, they can finally head to the ammo shop (????) and buy guns and rifles and the cherry on the top of this shit sundae is that he uploaded a picture of a random hooker on a street corner that he was in and stated that this was all Newsom's fault and when I confronted him about, he defended it by saying he was just trying to show everybody how dirty LA has become.

This might all seem like some edgy loser trying to seem cool but this is things take a turn for the worst. He seems to be into Elliot Rodger. If you don't know who that is, look him up. He has had Gary drive him to Isla Vista twice, went to the same store that he shot up, said that he had a lot of fun going there and even said that Elliot had awful aiming because if he were the shooter, then he would have shot a lot more people because of the amount of people passing by while he and Gary were in the car. The problem with all of this is that Kevin's history with women is almost like Elliot's. Confusingly wrathful of relationships, believing that he will get cheated on if he gets into one. It's almost like he found a parallel with his and Elliot's lives.

I know what this looks like but I want to know, what can come of this? I want to let my local police force know so that they can at least be tracking his case and if possible, alert the FBI and tell them to reject him when they run the background check on him. Pistols aren't that expensive and my fears are that he'll slowly gather up money and manipulate Gary into giving him the remainder with the promise of using the pistol for fun and then finally buy it and own a loaded weapon that he could use at any time on anybody. Comment down on what I should do, what can even be done or if more information is needed

Location: California