I’ve been running an experimental from about 6 months ago, right after they implemented (working) magazines, and I’ve been modding my own weapons, armor, and professions in the json… very fun, very easy. All you need is Notepad++ and a little bit of time. Copy and paste an item/gun with similar stats and then tweak what you want to change about it, save, and you’re good to go. Just make sure you are being really careful about the punctuation/spacing in Notepad++.