Cybergun Desert Eagle 50 AE CO2 GBB (two tone red)

A two-tone deagle i bought from Patrol Base around 5 months ago arrived different from what was advertised (different text and grip) and the mag release broke without ever actually firing the gun i’ve tried putting it back in but i’m unable to fix it, i’m not sure if it is missing a part or i haven’t been able to put it back in correctly. (i’ve stored the loose parts in the box within the bag with the allen key) (THE MAGAZINE IS LOOSE SO BE WARNED WHEN YOU TAKE THE GUN OUT OF THE BOX)