Nikon D3100 Grip - Jupio Battery Grip – VL Camera Photographic Store
Amazon.com : Neewer Professional Vertical Battery Grip Replacement for Nikon D3100/D3200/D3300/D5300 SLR Digital Camera, Works with 1 or 2 Pieces EN-EL14 Batteries : Electronics
BATTERY GRIP D3100
EACHSHOT D3100 Battery Grip for Nikon D3100 D3200 D3300 AS BG-2F SG-2F | Eachshot.com
Multi-Power Battery Grip With 2-Pc EN-EL14a Battery For Nikon D3100 D3200 - Walmart.com
Amazon.com : Neewer Professional Vertical Battery Grip Replacement for Nikon D3100/D3200/D3300/D5300 SLR Digital Camera, Works with 1 or 2 Pieces EN-EL14 Batteries : Electronics