Matrix L96 upgrades

Hi I just scored a (I'm pretty sure) matrix l96 and I was looking for some upgrade gonna be my first gun I upgraded more then just optics and like tac gear first and foremost how do I swap out the flash hider for a suppressor or something cooler and internal wise where can I find a kit maybe or somewhere I can get everything at one place for consistency that won't break the bank but will be worth the time and money not trying to be a pro player just for plinking in my back yard but wanna get as much fun as I can