The Oregon Trail is literally something the three of us came up with on a whim and decided to put together because, as it turns out, there are NO unique Trail Carbines in the base game! 

So, obviously, the solution was The Oregon Trail, a unique Trail Carbine with added poison damage to properly simulate that beloved dysentery we all know and love. 

The weapon can be found in the wreckage of a caravan to the North, the latest in a long line of victims cursed to die.