Well ill be frank with you. Im currently a collector right now buying my first gun, and I might play in games in the future but not right now since im quite busy. I chose the M4 because it appeals to me the most and ive always wanted to get one.
My $650-$700 is purely for the gun itself (no scope, no attachments, no gear, no vest, no apparel). The attachements I want are: silencer, ACOG, V3 carry handle, tactical rail for the riser, flashlight, vertical grip. I dont think these should cost too much though. So the majority of my budget is devoted to the gun itself.