I know this discussion was a few pages back . . . but was it ever determined what type of Royal mechs were produced for Niops? What about armor? I know they had SL-era body armor and individual weapons along with Nighthawks for the elite infantry . . . by the time of MWDA only a few squads of suits are left . . . right?
Looking for a bit of a set up for a merc unit . . . Sons of Korhal.
They never spelled it out, unfortunately. Only four actual unit types have been specified by name for Niops: the Black Knight, the Highlander, the Burke tank and the Nighthawk XXI and XXII. Their aerospace arm was stated to be the equivalent of their BattleMech arm: on the heavy side and full of Star League designs. For 'Mechs, vehicles and aero, they used to roll on the ComStar tables before everything went to hell in a handbasket. Their infantry was never expressly spelled out to be equipped like the old SLDF infantry, but the implication was there based on their other equipment.
By 3145, Niops reportedly has four squads of Nighthawks guarding the governmental facilities on Niops VII. Their main military academy (yes, it's described as "main") is the Central Military School on Niops VII, which has a highly active training program for infantry, an active vehicle training program, and an underfunded MechWarrior program.
Their current forces also state the "one bright spot in an otherwise bleak recent history has been the formal addition of infantry forces to the NAM in both unarmored and battlearmor alike." That implies some use of battlearmor beyond just the Nighthawk, and perhaps also indicates that the Niops Association is placing greater credence in battlearmor than in BattleMechs these days. Field Manual 3145 is a bit sparse in describing the NAM's composition, mentioning they have a single BattleMech regiment at 85% strength, with a D tech rating on the RAT tables. There's no mention of their current aerospace asset strength, but at their peak pre-Jihad, they had a full wing of 54 aerospace fighters. Niops now use the Periphery table, rather than the Republic table. It's probably a safe bet that, with their Workshops not having been rebuilt, much of what they currently field consists of whatever techs have been been able to salvage of old NAM units and the invading Word of Blake units, with imports taking care of the rest.
With that said...Niops might be a bit of an unfriendly environment for mercenaries. It was, after all, a merc unit that set the ball rolling in their civil war with a coup attempt. Your best bet would be if your merc unit was signed on with Interstellar Expeditions, whom Niops is in tight with (their joint asteroid mining project, Niops Mining, is currently the largest industry in the Niops system).