Trying to recreate the wheel - Ergo Grip Xpress Lever Broomhandle Vertical Forward Grips

It's a simple grip but i just cannot seem to understand the amount of screws and washers on this thing. You try to mount it on a rail and when i loosened it the locking lever and the tighting screw came apart and everything went everywhere why could they just not make it so it can come apart to much engineering for a simple tool i locked it in on the rail and it's on there but tends to have a little bit of movement after a bit not to many people make broom stick grips anymore i had high hopes for this