Yes. Maugs have 2HD and an LA of +3, that's an ECL of 5. In some ways (the fact that they basically immune to everything but damage) Maugs are too strong at this level. In other ways (the fact thay they have terrible hit points and saves) They are too weak. Maugs... And, really, any construct, are very difficult to get the proper balance on as PCs.
The B means that Alertness is a bonus feat. Also, Maugs are proficient with Double Bladed Swords, Heavy Armor, Medium Armor, and Light Armor. (creatures are proficient with any weapons and armor mentioned in their entries, as well as any lighter armors).
Note, too, that Maugs use Outsider Skill POints for their two Construct Hit Dice.
Later
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