PSA.
They need some filing to fit, but have a nice metal reinforcement molded within the feed lips. No feed problems with 115 gr, 147 gr. truncated or 158 gr. hollowpoints
I’ve not yet broken a transparent factory mag yet, but broken lips seem to be the most common problem.
Be aware some first run Magpuls had feed issues in some Scorpions, based on a post from Magpul they used an early scorpion as a model and there were some slight changes in later Evos, so Magpul made some mods.
The reports on the black windowed Extreme Duty factory mags seem to be good and don’t need filing.