Im on the later parts and gone through some big outpost looking areas. With enemies and a lot material/chest just tp get those and nothing else area is still in red so we just have to adjust to FC6 new designs. Much appreciated I was getting quite frustrated trying to clear this area a second time only to find enemies infinitely respawning in.
The RMS-18 is a Shotgun found in Far Cry 6. It can be bought from Juan's Arms Dealers, The Guerrilla Garrison, or found in FND chest.
This page reveals the full in-game map in high resolution. There are 6 Regions: Isla Santuario, Libertad HQ, Madrugada, Valle De Oro, El Este, Esperanza. The total map size of Far Cry 6 is 88km² (9400m height x 9400m width). About a third of this is water (29km²) and two thirds are land mass (58km²).
.