this thing is technically an antimatter rifle, but that's not because it's futuristic. no, it's called an antimatter rifle because of its ability to pierce 35.6 mm's of mithril. so, when people call this an antimatter rifle, it's because it's anti everything, as in everything perceivable as matter. (this thing is a PTRD-41 on steroids, but if guns don't exist in your D&D world, don't call it that in character. if you wanna see what this thing looks like: look up ptrd 41 on wiki) it get's it's moniker from the fact that it essentially is an angry pipe, which it's name translates from deep speech into common. if you use this thing in an actual d&d game, you either have ball's the size of a t34's forward assist wheels or are crazy. i'll go for the latter, but you do you.

 

Upon firing, roll an intimidation check to make other enemies have ptsd. sure, these thing's were meant for tanks, but red mist is just so much more pleasant than body's, wouldn't you agree?

 

every time you fire, roll a constitution saving throw to be able to shoulder the blowback from the gun. if you fail, it will shatter several bones and you will lose hit points based on your con+str

 

 

It’s up to you to decide whether a character has proficiency with a firearm. Characters in most D&D worlds wouldn’t have such proficiency. During their downtime, characters can use the training rules in the Player’s Handbook to acquire proficiency, assuming that they have enough ammunition to keep the weapons working while mastering their use.

Notes: Disadvantage: Saving Throws, Stunned, Range, Two-Handed, Ammunition (Firearms), Reload, Slow