Why would they charge Alec Baldwin again when "guns kill, not people"??

[theking]

...Shouldn't they charge the gun instead  :

prosecutors say they will charge alec baldwin again

New Mexico prosecutors say they will file new charges against Alec Baldwin if further testing shows that his gun was working at the time of the “Rust” shooting. The special prosecutors in the case, Kari Morrissey and Jason Lewis, dropped manslaughter charges against Baldwin in April.