If you played Fallout New Vegas you might be familiar with a gun called the Bozar. It was introduced in the game's Gun Runners' Arsenal DLC. It's a classic and one that's now available in the world of Fallout 4 thanks to mods.
If you're unfamiliar with the Bozar, it's an automatic sniper rifle. So it's part sniper rifle, part machine gun. It's deadly and it's extremely accurate, perfect for a character that likes taking enemies out from a distance.
Once you have the mod installed you'll find the Bozar on enemies who typically drop Hunting Rifles, a common weapon in the Commonwealth. We had a hard time finding the gun but after a bit of hunting, it dropped.
After you acquire it, you'll be able to switch between 5.56 and .308 ammo. You can also customize it with various mods.
It's a solid weapon and one you should definitely try today. It's currently available for Xbox One.