The Semi / Full Auto Sear & Selector Kit for KJ Works KC-02 is a handy piece of kit. It allows the model KC-02 to have a full auto selector for the original KC-02 which usually requires a lot of modification on its own. This is no different. Please follow these steps:
1. Use a ruler, draw a horizontal line with the hole which parallels the trigger group with a 5.5mm diameter circle.
2. You will need to identify the spacing between semi and full auto. From the right side of the horizontal line, find the point 3mm around the circumference of the circle going downwards, then another 3 mm.
3. After drawing the safe, semi and full auto points, use a drill and drill 3 holes on the surface for the ball bearings.