So, I got my new 40 rounder ETS Glock magazine the other day and I was excited. Being new PCC and still in the experimentation stage, my main goal is to experiment on the 40 rnd ETS magazine and what springs will work with it together with the Goliath base pad, and how many round I can get out of it. So I bought the Goliath base pad, and when it arrived (the day after the ETS mags), i was so anxious to try it out, with some of the springs I already have, and to my dismay, Goliath wouldn't work with the ETS 40 rnd magazine.
I got so carried away on how much rounds I can get if this combo (ETS/Goliath) works, missing a little, tiny detail that will cause for it not to work. The reason being is that, ETS 40 round magazine is has a leveled bottom base, and the Goliath base pad has an angled bottom base because it was specifically made for Glock magazine.
I am just putting this info out there, just in case there are some stupid newbies like me out there, thinking of doing the same thing.