If you are a type of person who likes to rush most likely you would want an m4 for outside and very big inside places. If you are outside you would want your gun to be on semi automatic because the m4 has very little accuracy on fully automatic.
If you are a leader like most leaders use you might want to use the colt 1911. I suggest this gun because it has very good accuracy. I suggest getting a green gas pistol of the colt 1911.
If you like to snipe I would suggest the vsr10 it has great accuracy and great ratings. I will tell you that it is a bolt action sniper. And I will tell you that you can stay far back while shooting because it has great range.