The M-200 is a solid choice of sniper rifle for any recon. It boasts exceptional accuracy and control, allowing you to outshoot an opponent in sniper duels. It is one of the quicker bolt action rifles, although still slower than the MSR. Keep this in mind when engaging other snipers. So to maximize the strengths of the rifle, I like to run with 2.5x12 scope, bipod,medium barrel, extended magazine, and silencer. Everything else is personal preference. The scope gives you good choice in zoom levels, so you can fight at medium ranges to extreme long ranges. The medium barrel is a good choice because it provides a good blend of power and agility, allowing you to get more shots downrange without sacrificing too much damage. The silencer gets rid of your tracers and reduces the sound of the shot which helps keep you safe and prevents the target from locating you. I generally forgoe the laser designator because it doesn't really contribute much at long ranges, but of course, if it is more comfortable for you then by all means use it.
Use it for long range fighting, picking off enemy snipers, and covering your own allies. Be sure to switch positions after every shot to prevent enemies from getting the drop on you.