The phrase "component parts" refers to the smaller pieces or elements that make up a whole object or system. It means the individual parts that come together to create something larger or more complex. Full definition
But it's 2015's most important AAA release for showing how to better - integrate the many, many component parts of a videogame into a coherent package. (theguardian.com)
Its architect had a single concept of the structure, which he then analyzed into component parts each of which would contribute to that concept. (religion-online.org)
There is nothing particularly novel in the approach suggested and it is to be found in component parts in many places. (slaw.ca)