ehhhh, I assume the guy meant an anti-material rifle? or some sort of autocannon if it actually is like a machinegun because anti-tank rifles are very antiquated and not a thing anymore, at least as a modern term for these weapons. That kind of thing got phased out since world war 2.
Magium
Not a pc game but rather on mobile. It’s a really solid fantasy CYOA game and (if you wanted to) play through the next set of story chapters completely for free as long as you meet the achievement requirements. Barring that, buying books (as the game calls it) has a rather fair price. Unfortunately the game is incomplete as the solo developer has sadly passed away, but what is here is great with a decent length since there’s been years of book chapters. Genuinely a hidden gem that I discovered on a whim back early in highschool, and it’s sad that I won’t be able to see the end they envisioned, so with that in mind I’ll be replaying this game again in the near future.