The DMG statement about magic items fitting 'regardless of size or build' is pretty clearly talking about how tall you are and your body shape (as in muscular, fat, scrawny, or hunched), not like reworking itself to fit a quadruped. It goes on to say, "Many magic garments are made to be easily adjustable, or they magically adjust themselves to the wearer." An 'easily adjustable garment' just isn't going to fit a camel, raven, or shark, no matter what you think magic might allow for. Furthermore, two paragraphs on, it says:

When a nonhumanoid tries to wear an item, use your discretion...

So it's really up to your DM, but I've never had a DM rule that magic armor reshapes to fit an animal form (whether due to wildshape or just a companion animal). Barding is a wholly separate item.

But you made a comment that clarified that what you're really interested in is being able to use the Guardian armor's Thunder Gauntlets while wildshaped, and that's a harder sell.

Thunder Gauntlets are a weapon, and "A weapon must be held in hand." (DMG p. 140, "Wearing and Wielding Items") Aside from apes, most beast forms lack hands and can't wield a weapon, even if it's theoretically attached to the armor. A gauntlet is not technically held, but I think that we can reasonably read it as "worn on a hand" in this case.

The DMG statement about magic items fitting 'regardless of size or build' is pretty clearly talking about how tall you are and your body shape (as in muscular, fat, scrawny, or hunched), not like reworking itself to fit a quadruped. It goes on to say, "Many magic garments are made to be easily adjustable, or they magically adjust themselves to the wearer." An 'easily adjustable garment' just isn't going to fit a camel, raven, or shark, no matter what you think magic might allow for. Furthermore, two paragraphs on, it says:

When a nonhumanoid tries to wear an item, use your discretion...

So it's really up to your DM, but I've never had a DM rule that magic armor reshapes to fit an animal form (whether due to wildshape or just a companion animal). Barding is a wholly separate item.

But you made a comment that clarified that what you're really interested in is being able to use the Guardian armor's Thunder Gauntlets while wildshaped, and that's a harder sell.

Thunder Gauntlets are a weapon, and "A weapon must be held in hand." (DMG p. 140, "Wearing and Wielding Items") Aside from apes, most beast forms lack hands and can't wield a weapon, even if it's theoretically attached to the armor. A gauntlet is not technically held, but I think that we can reasonably read it as "worn on a hand" in this case.

In total, it's not 100% certain and largely up to your group's DM, but I wouldn't allow this, and Adventurer's League tends to be on the conservative side in my experience, so don't count on this working.

The DMG comment about magic items fitting 'regardless of size or build' are pretty clearly talking about how tall you are and your body shape (as in muscular, fat, scrawny, or hunched), not like reworking itself to fit a quadruped. The very next paragraph goes on to say

When a nonhumanoid tries to wear an item, use your discretion...

So it's really up to your DM, but I've never had a DM rule that magic armor reshapes to fit an animal form (whether due to wildshape or just a companion animal). Barding is a wholly separate item.

But you made a comment that clarified that what you're really interested in is being able to use the Guardian armor's Thunder Gauntlets while wildshaped, and that's a harder sell.

Thunder Gauntlets are a weapon, and "A weapon must be held in hand." (DMG p. 140, "Wearing and Wielding Items") Aside from apes, most beast forms lack hands and can't wield a weapon, even if it's theoretically attached to the armor. A gauntlet is not technically held, but I think that we can reasonably read it as "worn on a hand" in this case.

The DMG statement about magic items fitting 'regardless of size or build' is pretty clearly talking about how tall you are and your body shape (as in muscular, fat, scrawny, or hunched), not like reworking itself to fit a quadruped. It goes on to say, "Many magic garments are made to be easily adjustable, or they magically adjust themselves to the wearer." An 'easily adjustable garment' just isn't going to fit a camel, raven, or shark, no matter what you think magic might allow for. Furthermore, two paragraphs on, it says:

When a nonhumanoid tries to wear an item, use your discretion...

So it's really up to your DM, but I've never had a DM rule that magic armor reshapes to fit an animal form (whether due to wildshape or just a companion animal). Barding is a wholly separate item.

But you made a comment that clarified that what you're really interested in is being able to use the Guardian armor's Thunder Gauntlets while wildshaped, and that's a harder sell.

Thunder Gauntlets are a weapon, and "A weapon must be held in hand." (DMG p. 140, "Wearing and Wielding Items") Aside from apes, most beast forms lack hands and can't wield a weapon, even if it's theoretically attached to the armor. A gauntlet is not technically held, but I think that we can reasonably read it as "worn on a hand" in this case.