Magnum M720 Custom Revolver

Hi! I made this project to keep my studies up to date. I used a concept from an artist called Nyandgate that I found on Deviantart. Here's the link to the original concept:

https://www.deviantart.com/nyandgate/art/M720-Revolver-Design-Multiview-281568933

As always, constructive criticism and suggestions are welcome. Thanks!