no the do not have a stainless model from the phoenix site "Available in satin nickel or matte black finish"
They have a lifetime of the original owner warranty again from the phoenix site " Is there any kind of warranty with the purchase of a Phoenix Arms pistol?
Yes, for the life of the Original Owner whose warranty card is on file, Phoenix Arms will repair or replace, at its sole discretion, any or all original parts of this pistol that are defective, or that become unserviceable due to normal usage. The exact warranty terms and conditions can be found in the back of the instruction manual that came with your Phoenix Arms product".

yes they have a lifetime warranty no they do not make a stainless model just satin nickel or matte black phoenix-arms.com/pages/customer-service

No stainless model was ever made by Phoenix Arms

This has a lifetime warranty ***Note*** For life to the Original Owner whose warranty card is on file, Phoenix Arms will repair or replace, at its sole discretion. No stainless model made by Phoenix Arms. These are made of cast zinc and aluminum alloy

yes they have a lifetime warranty no they do not make a stainless model just satin nickel or matte black phoenix-arms.com/pages/customer-service