Hagan
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As a result of having a large hand, my right hand pretty much covers my mouse, and a result of my mouse having "sniper button", my thumb tip covers at least half of it, sometimes I press it by accident and get really slow mouse movement. 
My mouse is the Logitech G402 Hyperion Fury - FYI.
My mouse is the Logitech G402 Hyperion Fury - FYI.