I haven't been able to find any explanation on what the significance of the tag (Main Weapon) is or how it affects the rules except that it obviously point out the main weapon in a regiment.
Which brings me to my question. In Table 2-6 Additional Standard Kit Items you are able to switch out weapons for another weapon such a laspistol for a lascarbine. However, all those weapons have the tag (Main Weapon). Does that mean you can only switch the weapon if it has that tag? For examples rough rider regiment gets a laspistol and a hunting lance as their arms. However, it is the hunting lance that has the (Main Weapon) tag so does that prevent a rough rider regiment to switch the laspistol for a lascarbine?