Just picked up a G43x. So far so good with the factory 10 round mags. I've got 3 shield arms 15rd mags and the shield arms mag catch, I was planning on converting it over to use the 15 rounders. I've heard mostly good things and some bad about the shield mags, but this is the internet and it could be BS. What are your guys' experience with the shield mags? Mine are Gen 2.