Rise of the Tomb Raider: How to Get All Weapons & Parts
Sub Machine Gun Parts
Part 1 – Head over to the Logging camp in the Soviet Installation after obtaining the Rope Arrow. Make your way behind the house right next to the campfire and you’ll see a piece of the wall that can pulled away near the ground. Remove it then head inside to find the strongbox with the first part.
Part 2 – The next couple of parts are located in Copper Mill. The first one will be in the room that you just opened up by burning the door down with a Molotov Cocktail (part of a mission). In this room is a part of the wall where you can use your Rope Arrows. Break it open and enter for the piece.
Part 3 – Found at the top of Copper Mill. Just make sure to clear out the enemies first.
Part 4 – This one is in the Abandoned Mines (one of the later areas in the game). Climb up the ladder at the point indicated in the map to find your final piece.