Posted the final update for these. +2 magazine extensions for the P10 C! They sit flush with the grip and come in 3 different sizes to match your back strap. They use the stock steel retaining plate from the OEM +2 extensions, so no need to buy anything to install them.
They're solid and held up to 2 IDPA matches and a Steel Challenge.
Find them on my Odysee page under the same name.
Glad to see another P10 fan here!
Unfortunately this will be very difficult at best, and a waste of time at worst. The P10 magazine walls are so thin that you'd be lucky to get more than one or two uses out of it. They're not built to accept thicker polymer magazines like a Glock.