iFixit has just posted their completed teardown of Google's Nexus 5, and rewards it with a repairability score of 8 out of 10. Such a high score is mainly due to the phone being built somewhat around a modular design which makes it each to replace things like the screen, headphone jack, speakers, and camera modules.
One of the big reveals of the teardown is that the Nexus 5 features an alloy chassis that is then skinned by a plastic frame which provides for a solid feel while maintaining a decent pricing point. Other notable fines include SK Hynic RAM which covers the Qualcomm CPU completely, as well as the SanDisk supplied flash memory.
The teardown is quite interesting to look at even in you have no idea what anything is. The amount of technology that companies like LG are able to pack into such a small space today and still remain modular simply amazes me. The fact that device is easy to put back together after its been torn down says something about LGs engineers and the level of skill they have.