Exploring aftermarket DBM options for my bottom release Model 11 (I have the biggest headache)...

I had a look at some of the aftermarket AICS floorplates (Atlasworx, etc) and I've so far only found one that works with bottom-release rifles.

Allegedly, PTG makes them for bottom release guns (the release they use looks like this: )

Problem. I mailed PTG to be sure and they say it's meant for top release rifles....

the one I was checking...: http://pacifictoolandgauge.com/botto...t-release.html

Has anyone ever used PTG bottom metal for a bottom-release rifle (ie: the ones with the built-in release)?
I could really use some guidance.