Poorly designed and no support - GG&G MAD Top Mounted Deployable Iron Sight

Zero stars.

I’ll be brief about the lack of support. GG&G never responded to my 2 emails or phone calls. Lifetime warranty? Not if GG&G never responds or picks up the phone. Save your money. There are much better rear sights for equal $$$ and much less.
Listed are rear sights I’ve experienced recently.
KAC Micro USMC, MagPul Pro, Daniel Defense, Scalarworks Peak, Midwest Combat Folding, Griffin Armament M2 and even the MagPul MBUS Gen2 poly sights are a much better option.

I’ve returned one of these GG&G rear ranging sights to OP. It was under the 30days and the locking button failed by popping out in the down position. It’s a poorly designed locking mechanism. The button is only held in by the spring pressure and the leaf detent plate it actuates for release by friction/ upward pressure. If you don’t push straight in on the button, it can and will get stuck.

The apertures. Note: it’s meters and not yards. Description is off.
1st: The large ranging plate blocks at least half- 3 quarters of the viewable surrounding when used with a 20mm objective red dot.
Secondly, the 300m aperture on the one I have is slightly off center from the other distance apertures. It’s only off by a millimeter but enough that will need its own zero.
Three: It is overly a complicated, poor & contrived design.
Back to front: The hex screw holding in the ranging wheel is rounded and reflects light upward toward the aperture. The plate it holds in has a circle cut out that is only concentric with the 0 aperture. The Zero aperture is Not concentric with the larger front assembly cutout. The rear plate has a straight through cut. It also reflects light upward. The apertures are concave but does not help with the refracted light. It actually lets more in to distort the sight picture. The assembly it’s screws to also has a circle cut out. It’s roughly 1/4” and almost 4 times larger than the rear plate cutout. It also has a straight cut and also reflects light upward yet differently than the front plate as the curved surface area is much bigger. I have sights that have concave, convex or a straight through design. They all work well because they picked one design.
I cannot see this sight successfully utilized in a self defense, hunting, competition or combat environment.

Any aperture past 0 has a hugely oblong effect on the sight picture. Getting a perfect sight picture becomes a challenge at best.