The actual M4 is a well rounded gun with lots of options, i personally dont use one anymore since theyre over used (i use an Sr16 from tokyo marui now) if you want Cqb then you can buy a CQB m4 which has a shorter barrel, or you can choose a full sized M4 for the outside battle, or an M16, again, i use an M16a4 for my actual non cqb battles and as a primary since they hold a much bigger battery then the M4 carbine does, there are other options for a larger m4 batter (peq boxes, crane stocks, battery bags) but i find that those add ons make it less versatile for me, i prefer to keep the gun as light as possible ( i own a G&G m4 cqb H) In short, if your a smaller person, an M4 would be decent, or an Sr16 or M15 tac carbine ( all it is an m4 with a M16 full sized stock, better battery life, still very CQB capable)
Another option for a CQB gun that i absolutely love, and it changes things up a bit is a Cyma Ak74u, its full wood and metal, looks really nice, shoots around 350-375 with .25gram BB's and is only 130 bucks, i bought one just as a back up and its slowly starting to be a primary
On that particular gun your showing, theres nothing really wrong with the insides, but all the problems your going to experience are in the body, it has a weak connection with the outter barrel and the body due to a plastic reciever, its not un heard of to break the actuall barrel right off the gun because of this, i myself have had this happen before on a TM M4 ris just by having a sling on me
one last piece of advice dont order from Evike, go to airsoftgi for better customer service and better deals
