[X] Share E-mail address
[X] Accept the request in exchange for their offer
You deliberately ignore the fact that Principal KNOWS how it feels to lift a real gun, you really don't want to know where that knowledge comes from.
Hikigaya considers this unnerving? Weird sensibilities. To me, it's a joy to hold well maintained, well crafted firearms. People sharing guns, isn't troubling in and of itself. It tends to be a good thing, if they're friendly. Hatchiman's looking at the glass half-empty again.
Principal is not entirely respectable, but he still manages a top school. A capable personage on your side, who knows firearms is better than somebody who is unknowledgable, or flippant about them. He plays Pokemon GO at school like his students have, and gets flak over it, but that's peanuts given how he keeps the academy from descending into teen-horomone fueled Gomorrah.
Suck it Shijo! Just try to stop obstruct the club! Cautious relationship, pah! Hikigaya can
keep poise. Don't need a silly, quick to judge girl who wished in canon that her arm was broken like Miko's, and looks down on this club.
It's like Shijo thinks this club is for violent criminals. Granted, the club got a big donation from a Yakuza princess, but it's a leap of logic, as all students in good standing are welcome to join.
If it comes down to an actual emergency where decent people are being attacked with deadly weapons, someone motivated enough to do so, would be able to train anyways outside the school. It'd be better for well-intentioned students to be able to operate a gun (even if it means a gun taken off a dead or heavily injured friendly), and fight back against a threat, than not be able to.
If Shijo actually manages to turn people against the club, there's a slightly greater chance members become outcasts who fit into her self-fulfilling prophecy, if assholes act on Shijo's trash talk unreasonably. At that point, I'd hope that Hatchiman uses the opposition to grow the bonds of his club members closer to each other, show the school that the naysayers were full of shit, and drive up his recruitment when they realize there's a lot of good to be had in the club. Shijo might even act as inadvertent advertising for curious classmates.