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I have not, but man they are proud of their triggers. I have heard that some people have had problems with the Geissele SD3g trigger in the mpx. However, that is highly contrary to my own experience. The best description I have heard in regards to the SD3g in the mpx is that: "it's more fun than a bag full of puppies". Not to mention the SD3g is half the cost of the system you mention. I just can't imagine it having $300 worth of better performance over the Geissele. I own two of them and they have far exceeded my expectations of trigger control. Of course maybe someone else has experience with both and can give you a good comparison.
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I have both. If you want to run true full auto rates, binary gets it done.
Average person with some training and an SD3G can do about 450 RPM.
Average person with binary will run about 700RPM. I get occasional splits that touch 900RPM, but for long mag dumps I'm about 650 to 700RPM sustained.
Here is a 100 round surefire mag with the Franklin trigger. My gas key was slightly loose, which caused the first round to short stroke.