Right i am going to be fair here, for a first gun, dont worry about a gun with trades or whatever, guns are cheaper without, and this way that means you can avoid Cybergun :lol:
also the CA is smaller than your because one the stock isnt as bulky it is only 5 points as well. and AFAIK the handguard is smaller, anyway dont listen to this about your best M4!
Basically you want either a JG or a CA and definitely an SRC
LOVE M4's personally you can amke them look really unique if you want to.
Also if you go for a JG M4, later on when you get more money their a great platform to upgrade from. My dad had one upgrade it like hell then sold it. That gun outperformed guns costing £400 when it was upgraded.