*serious. in my opinion its definetly the MX-SW, its a budget loadout of max 600k.
it features:
low recoil
free bipod
effective range up to 1.2k
capable of loading 100rnd magazine
Cheapest effective sniper you can get
6.5mm Caliber, capable of pennetrating through some soft cover (metal sheets thin walls)
able to fit in your backpack, so you can do covert ops with this firearm
the bullet loses velocity speed after around 700-900m so when fired with suppressor you will only hear impact.