system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do police Tasers have cameras on them but not their guns?
gpt
Police officer and Taser Instructor here:

Taser (the company) has a monopoly on Conducted Electrical Weapons.  So any CEW you see an officer use is made by Taser.  They offer cameras for thier devices (at an extra cost).

There is no monopoly on what guns police departments use.  They are issued many, many brands and models.  Some officers must provide thier own guns.

Gun cameras alsob make guns heavier, harder to wield, and harder to holster (you need an expensive, custom holster).

Taser cameras can be small because they just run off the battery of the device itself.  A gun camera needs it's own power supply.