Matt Dubber’s FX Impact X Gauges?

Saw these on his Instagram and they are not stock. What are they? 



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Just a note, the stock gauges are just indicators, at best...when off the reg, I notice there is 10 bar difference between the two. For tuning, I would recommend indexing your reg settings by turns out of the reg adjustment screw, rather than using any gauge. My experience has been, after bleeding the gun (say for maintenance), I can set the same turns out from stop (1 7/8 for my tune) and be within 3 fps after recharging. Using the gauge, lucky to be within 10- 15 fps.