Latch mechanism is held to the part with a single Phillips head m2 screw

The 4 parts sit together (as shown) to form the latch mechanism.

Note: the large slot in the white button component, that allows it to slide past the screw which intersects it. The red line illustrated how the screw intersects it.

All component's are made from ABS plastic with exception of the stainless-steel screw, and steel spring.