This Battery Grip for the Nikon Z6 and Z7 Adds a Second Shutter Button | PetaPixel
Aftermarket Z6/Z7 battery grip with a 'Shutter release button': Nikon Z Mirrorless Talk Forum: Digital Photography Review
PNL-Z6IIG Custom L-bracket for Nikon Z6II Z7II with battery grip MB-N1
Nikon MB-N11 battery grip for Z6II and Z7II now in stock - Nikon Rumors
Best price Jupio Battery Grip for Nikon Z5/ Z6/ Z7 (MB-N10) | Photography – VL Camera Photographic Store
New: Meike MK-Z7G metal hand grip for Nikon Z6 and Z7 cameras - Nikon Rumors
Amazon.com : NEEWER MB-N11 Replacement Vertical Battery Grip, Compatible with Nikon Z6 II & Z7 II Camera and EN-EL15c Battery for Vertical Shooting with Shutter Release, Main Dial,AF ON Button & 1/4"
Amazon.com : Mcoplus MB-N10 Multi-Battery Power Pack Z6 Z7 Battery Grip with Remote Control for Nikon Z6 Z7 Mirrorless Camera : Electronics
This third-party battery grip for Nikon Z6/Z7 cameras has a shutter button - Nikon Rumors
Newell Battery Grip MB-N10 for Nikon Z5, Z6, Z7 - Newell Pro - Camera Batteries, Chargers, LED lights and more