To be honest i didn't even really know that, this weapon really existed in fallout 4. I googled it 10 minutes after I got it so I can find out how to get ammunition for it and I found out it was from the nuka world dlc.

I haven't played nuka world yet but I have the seasons pass for all the dlcs. Anyway i was more or less preparing for the journey before hand as it was always my strategy for previous fallout games because I know first hand that the dlc enemy's are usually pretty dangerous so I usually pack almost 10k rounds each for all my weapons that way I don't run out of bullets when I need them the most.

The last time I ever prepared for a DLC trip was back in fallout new Vegas for the divide DLC and by the time I had returned to the Mojave I was completely out of bullets and grenades and I was over weighed with all the valuable loot (Cough...) (Cough...) souvenirs... I was dragging back with me.

And yes I admit i am a hoarder.

Anyway back to topic. I didn't know these weapons existed outside of mods which I found pretty cool that Bethesda did I absolutely love this new gun as I can finally arm my community's with ak47s and have a Soviet themed army without using cosmetic mods.