I've used that Madbull one for years now, no problem; as long as you know how to fill a mag properly its not an issue. My old (version 1) metal AI adapter lasted for years until a propane bottle fell off a table and landed adapter-first
Then I went through 2 of the plastic ones in under 2 years, so I switched to MB.
Why AI switched to crappy plastic, or why they at least don't offer a "deluxe" oldschool metal one baffles me to this day.