Hand Grip for Panasonic Lumix GX9

It has own nut for tripod installation. Will it fit to Panasonic GX80/GX85?. How much grip weighs?. Grip with nut and screw weighs 40 grams (1.4 ounces) vs. 130 grams (4.5 ounces) of officialDMW-HGR2 grip.

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