Maze Customs offerings are separated into four categories:
* '''[[Maze Customs:Major mods|Major mods]]''', which regroups certain weapons into '''Customs families'''. All weapons within a Customs family of weapons can receive the same range of varied and comprehensive modifications. There are 11 12 weapon families in total.
* '''[[Maze Customs:Minor mods|Minor mods]]''', which are smaller ranges of modifications aimed at individual firearms. The range of modifications is not as extensive but may still be useful.
* '''[[Maze Customs:Cosmetic mods|Cosmetic mods]]''', which are ranges of modifications that only change the visual appearance of a weapon. These services are only meant for fluff and descriptive purposes.