Let's not forget that MadCatz made a 50g mouse back in 2015 - the R.A.T 1 : r/MouseReview
Is It a Mouse or Is It a Rat? It's Both! Mad Catz Releases Innovative, Customizable, 3D Printable New Gaming Mouse, R.A.T.1 - 3DPrint.com | The Voice of 3D Printing / Additive Manufacturing