Nerf Roughcut 2X4 Replacement Gears

These are designed to replace the gears inside a nerf Roughcut 2x4 if the original ones break.
The centre hole will need to be drilled out with a 3mm drill bit.

Replacement Instructions

To replace them you first need to open the gun up (colours may be different depending on what version you own):
Unscrew the 3 screws in the priming handle first and remove it.
Next undo all the screws in the main body of the gun and open it up. (be careful of the small orange part and spring in the tactical rail at the top of the gun, it may fly off and get lost).

You might want to take pictures at this point to help you put it back together.

Inside you should see the two plunger tubes connected to the front barrel. The two plungers are connected to the main mechanism. This consists of a rack gear (flat gear) connected to the priming handle, two gears (one large and one small) and a second rack gear connected to the plungers. There is also the trigger, trigger catch and two other catches.