I think this is largely unnecessary; the reason being that modded factions use their own weapons - all you have to do is fight with or against their ships in order to find out what weapons they use. It's not exactly difficult to remember, and to be honest you don't really need to remember which faction a given weapon comes from.
And beyond their description and placement, athletic style is also a good indicator for which faction they belong to: an Exigency weapon looks nothing like a BRDY weapon, or a SCY weapon.
In short, a think an identifier field is useless and unneeded.