Saul, you are right that was a bit of a blanketed statement sorry.
So for the record...the spacer with the notch, in my experience, doesn't fit the race master mag pouch.
That said, perhaps you could consider including a spacer that would fit with the race master as well. I might only be speaking for myself here but I really like the idea of the anti-rotation security of the spacer and since we (race master owners) have to sacrifice the ball joint attachment in order to use the rail system the spacer allows for fine angle adjustments with out having to worry about finding a serrated washer that fits or using loctite.
As I stated before I really like the product and your products in general, as I intent to switch everything over to DAA as some point (wallet providing), this is not me complaining, this is just my 2 cents.