Most of the screen-accurate parts on my old car came from Apex:
https://www.youtube.com/watch?v=yBo1DvKzRJ4
Apex was the source for many, many Hollywood propmasters.
I think I had to go to Black Hole for the last of all the original Ghostbusters parts, though: (sadly now closed)
https://www.roadsideamerica.com/story/18130
I remember flying back from LA one time with a suitcase filled with bomb-looking parts from Apex and setting off some sort of explosives detector at LAX, probably from the toxic dust covering all the parts. First Wife ran off laughing while I got surrounded by security :D
All I can say is, if you like gear, you gotta visit a place like this.
[1] https://skycraftsurplus.com/products/vintage-ford-mgm-51-shi...
There is a story how Peter Beck bought there an LR101 vernier thruster from Atlas ICBM, and then smuggled it to New Zealand. Examining the engine showed him that "professional" stuff was not necessarily too much more complicated than what he could make at home. This was probably one of the factors which inspired him to start Rocket Lab, which he did after returning from the USA.
* http://www.activesurplus.com
* https://www.youtube.com/watch?v=_s5RkCWKQrA
* https://nowtoronto.com/lifestyle/the-gorilla-store-keeps-the...
Great documentary on it -
88MPH: Ths Story of the DeLorean Time Machine
https://youtu.be/fgOb22gz_TY?t=46m04s
Linked to the segment Apex is brought up.
These people are clowns.
I guess if you "have to ask"...
How is this usually used? Do productions rent the parts to build more complete props, like a full plane interior, then tear it down and return the individual parts? Inventory control would seem very complicated!