dragonic bloodrager and the sorcerer vmc question

[fel_horfrost]

If you were a dragonic bloodline bloodrager and took the sorcerer vmc would the natural armor bonus from both bloodlines stack or over lap?

Bloodrager level 4 dragonic bloodline ability

Draconic Resistance (Ex): At 4th level, you gain resistance 5 against your energy type and a +1 natural armor bonus to AC. At 8th level, your energy resistance increases to 10 and your natural armor bonus increases to +2. At 16th level, your natural armor bonus increases to +4.

Sorcerer level 3 ability

Dragon Resistances (Ex): At 3rd level, you gain resist 5 against your energy type and a +1 natural armor bonus. At 9th level, your energy resistance increases to 10 and natural armor bonus increases to +2. At 15th level, your natural armor bonus increases to +4.

I realize that you would get the better of the energy resistances
But i'm not sure about the natural armor bonuses.

Any help would be appreciated.
I thank you in advance for any help provided.

[ErichAD]

They are natural armor bonuses, so they shouldn't stack. I think some natural armor things will call out that they do increase or stack with your current natural armor, but neither of these appear to do so.

[Kando]

Let me explain the diffrent natural armor bonuses with a dragon, but of course you can apply this to any other creature.

There is the flat natural armor like the scales from a dragon.
Then there is natural armor bonus think about it like the scales/skin becoming unnatural/magicaly hard/resilient.
Dragons are by nature heavy armored and resilent so they "can" get a size bonus to natural armor.
And at last there is the "only" magical enhancement bonus to natural armor a dragon could get for example with items. It makes the scales look shiny and clean.^^
Thats how i try to remember the diffrent bonuses.

All of these can/would stack.
the first is only called natural armor (flat and undefined)
the second ist called natural armor bonus (undefined "magical" bonus)
the third is called a size bonus to natural armor (look at the spell "form of the Dragon")
and the last is called an enhancement bonus to natural armor.

But of course they can/would not stack with themselves.

So no, there are both "natural armor bonuses" in your case so they would not stack. The easyiest way for you to get a stacking armor bonus would be lvls of dragon disciple. Or the amulet of natural armor.

ps: no gm should have a problem if you dont let your character or any other creature "grow" scales or something with the "magical" bonus, because you dont have to it is still a "magical" bonus. On the other hand the flat natural armor should always be visible in some way.
pps: the beastiary does not always call out the first 3 diffrent natural armor bonuses and just puts them together as natural armor or base natural armor. And thats why there is so much confusion.