Some Hi-Peezys. If upgrades are a thing in the game, the option to use Thingmeister and JSARMSCO parts on them, and the HTA bullpup kit
Luty
Recession Ruger
Gepard made with a Glock
https://www.youtube.com/watch?v=2TiTdIYWHTE
Shovel AK
Hood plasma cannons
https://www.youtube.com/watch?v=0Nz3YCBxOuw
Homemade 37mm flare launchers or stolen police tear gas launchers loaded with flechettes and other anti-personnel loads, using black powder as propellent
Homemade armor plates and carriers. Melted-down milk jugs with fiberglass covered in duct tape, the surplus Italian UHMWPE plates you used to be able to get on Sportsman's Guide for like $15, heavy and rusty pieces of thick steel
Swathes/patches of MOLLE webbing stitched onto homemade gear in weird, bright colors because they've been stolen from backpacks and coolers and other normie shit they put MOLLE on now
Bicycle/longboard helmets painted black or camo with NVG mounts screwed on, but the NVG is a GoPro mount going to a phone holder with a clapped Obamaphone on it (the battery is cooked so a power bank is taped/ziptied to the back of the helmet with a cable running to the phone; using a phone as digital NV means it's useless without an IR illuminator which shows up to other ghetto-NVG users)