Right/left click button switch model

If you are talking about the left/right mouse click, those are SW1 and SW2, which are OMRONs. If you are talking about the left/right tilt buttons that are SW8 and SW9, those are "standard" solderable tactile button switches that you can get from any maker shop.

Tactile Button Switches:

• Nice article about them in general:
  • Tactile Switch Basics
  • Tactile Switch 101
• I desoldered one for you and found it is made by Alps
  • L x W x H is 6.0mm x 6.0mm x 4.3mm
  • 0.98N, which is around 100 gf
  • Through hole, so easy to solder/desolder
  • No ground pin,
  • It is likely this model, or equivalent: SKHHAJA010
  • Purchase from Mouser or anywhere else you happen to find it
• There is no reason you have to get an Alps one. These are pretty common and you can get them from several manufacturers, so look around. Here is a CUI one that would work too. Be sure to not get any short terminals/legs
  • https://www.cuidevices.com/product/switc...
    • From Mouser
    • From DigiKey

Omron Subminiature Switch

• You can find replacements for these all over. Amazon, Mouser, Digikey, Aliexpress, etc.
• Chinese Model D2FC-F-7N(10M)
  • The C means it is the chinese version
• Japanese Model D2F-01F, equivalent to
  • The equivalent part number from Omron should be D2F-01F. 01 means it is rated for 30VDC, 0.1A. The F at the end means it is the lower force version, 0.74N.
    • Product Page
    • Omron D2F Datasheet