That's well-modded, I like it. It can be improved (powerful automatic, aligned stock, etc) but like I said I'd think twice about it since it's low level compared to your character. You're at the stage where I'd advise getting in to events because legendary effects are awesome. My Fixer gets +50% AP (plus another +40% from the magazine) and faster fire rate, both of which make it much more effective than it would be without these effects.
To achieve anything in this game you must be prepared to dabble in the boundary of disaster — Stirling Moss