lost Origin Mod firing switch delrin part

[betterthanyou]

I lost the white bottom Origin mod delrin cap. Is it essential to have this part in the device?

Does anyone have any idea where I can buy a replacement for just this part? I've looked a little bit and I've only found origin mods for sale not any individual parts or part kits

 

[betterthanyou]

I'm referring to the white delrin piece that screws onto the top of the Origin switch. What is the function of this part and can I go without it?

Is there anywhere I can order parts like this for my origin or do I need to replace the entire mod?