It is necessary to kill PMCs at the Lighthouse in a certain area (Highlighted below). We collect weapons with which it is convenient for you to camp. You can take an MDR with a silencer and optics on a 30mm mount, cartridge M856A1. The picture shows PMC spawns. The bottom line is, if you spawn on a red spawn, then start a new raid. If On yellow, then check all adjacent spawns and go camping on the mountain marked with a yellow cross (Camping no more than seven minutes from the start of the raid). The best spawn is green. From him, run along the coast and with a high degree of probability you will meet PMCs in the area you need.