While I applaud the piston and have absolutely no experience with it, my experience with vudoo mag failure has neen the rear mag tab hooking into the mag release acts as a pivot point allowing the mag front side to dip down when the rifle is jammed into a bag or barrier prop.
This was partially fixed by the industry offering longer “ file to fit” mag releases that get the mag up closer to the action with less pivoting. The real problem is the mags are physically smaller than the m5 pattern magwell, allowing enough room to pivot. That is why people stick velcro or something else the the mag to take up this wiggle room and keep the mag vertical.
I have tried installing set screws with rounded bottoms in both the front and the rear of the m5 magwell to eliminate this slop. The problem with getting a perfect rock free fit then induced a non drop- free situation where the mag would hang up without physically grabbing it out. I prefer the mag to drop free by itself , so I currently am just using longer mag releases in my vudoos for competition.
These pics are a good 5-6 years old, but are still relevant
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