72.5 grams and it still looks stock. Logitech G403 Prodigy Weight Reduction. : r/MouseReview
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Amazon.com: Logitech G403 Hero Wired Gaming Mouse, Hero 16K Sensor, 16000 DPI, RGB Backlit Keys, Adjustable Weights, 6 Programmable Buttons, On-Board Memory, Braided Cable, PC/Mac/Laptop - Black : Video Games
Logitech G G403 HERO Gaming Mouse 910-005630 B&H Photo Video
Logitech G G403 HERO Gaming Mouse 910-005630 B&H Photo Video
Logitech G403
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Amazon.com: LZYDD Replacement 10g Weight with Weight Door Cover for Logitech G403/G703/G903/G502/G Pro Wireless Gaming Mouse (Black Weight + Door) : Video Games