None of the recoil assemblies we have fit the PT709. It is a different size than the G2s.
I have the stainless recoil spring assembly on my G2C and would like to do the same with my PT709 Slim.
Unfortunately the Lakeline website does not indicate the recoil spring assembly is compatible with the PT709.
I know the stock spring assemblies on both appear identical, but given the tight tolerances of firearm parts I just want some reassurance that it will work.