Phil owns an FN Five-seveN, which is chambered for 5.7x28mm ammunition, and that shit is more expensive than the common handgun ammo. Here's the lowest price per round currently listed on
AmmoSeek:
9mm Luger (9x19mm): 16.5 cents per round
.45 ACP: 40 cents per round
5.7x28mm: 60 cents per round
In other words, he bought an expensive meme gun that requires expensive ammo, and chooses to carry it around the ranch instead of carrying his 9x19mm handgun.
You're really underselling how poor a choice the Five-Seven is. Despite the much higher cost per round, 5.7x28 offers relatively negligible benefits over 9x19. Further, it's not nearly as readily available commercially as 9mm, .380ACP, .45 etc. It's also basically useless when compared to an AR/AK, a 9mm rifle, or shit, even a .22LR rifle really, for what tasks a firearm would have on a ranch, (most notably as a varmint gun to deal with pest animals).
For the same price as one Five-Seven he could've built two AR pattern rifles (assembling a complete upper and lower is as simple as inserting a takedown pin), and had enough money to spare for ammo. Alternatively he could've done an AR SBR build (including the cost of the NFA tax stamp) and had the money for a decent pistol chambered in an actually useful cartridge left over.
That's not even touching on the options that exist for milsurp, former LEO, and used firearms (for example he could've bought around 3 SKSs or 4 Yugo M57s along with ammo for the same price as the Five-Seven), or cheap but surprisingly reliable shit like Hi-Point pistols and carbines.
Also, as an aside, I have no idea why you'd buy a Springfield Hellcat over a XDs.
TL;DR: The Five-Seven is a meme gun chambered in a proprietary meme round the world's militaries and law enforcement agencies collectively decided was cost ineffective. It's a gun you drag out of your safe to show off to your friends, but you never shoot because ammo is already fucking expensive enough in the 'cheap' calibers. Also, no surprise they're shitty at LARPing as gunspergs, are bad with money, and have terrible taste in firearms.
Edit: corrected pistol AR build to SBR, thanks
@Particle Bored