'''General capacity''' is measured in weight units, and allows for all types of items, so long as they do not exceed the listed maximum amount of weight units.
** Example: The '''field pack''' is a backpack with a general capacity of '''40 units'''.
'''Special capacities''', often nicknamed '''pouches''' or '''pockets''', are additional sections separate from the general capacity, which typically only allow for one type of item, with a small, limited maximum amount for each.
** Example 1: The '''TT-1A Assault vest''' is a tactical vest with a general capacity of '''5 units''' and an additional special capacity called '''Ammunition''', which allows '''up to 6 [[weapon accessory#Magazines|magazines]] with a size tier of Large or less'''.** Example 2: The '''BDS 40mm rig''' is a leg rig with a general capacity of '''0 units''' and an additional special capacity called '''Ammunition''', which allows '''up to 8 [[Ammunition#Heavy weapon calibers|grenade launcher rounds]]'''** Example 3: The '''Crosman Elite competition vest''' is a tactical vest with a general capacity of '''3 units''' and three additional special capacities: '''Ammo 1''' (allows up to 2 magazines, size tier Large or less), '''Ammo 2''' (allows up to 2 pistol magazines, max size tier Small or less), and '''Ammo 3''' (shotgun shells only, up to 20).
Full definitions of each special capacity will be shown on the relevant lists, linked in the sections below.