Nikon D3100 vs Nikon D3300: What is the difference?
SPEEDLIGHT FLASH + COLOR DIFFUSER + BATTERIES FOR NIKON D3100 D3200 D3300 D5000 | eBay
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Vello BG-N12 Vertical Battery Grip for Nikon D3100, D3200, D3300 (EN-EL14/14A) at KEH Camera
EACHSHOT D3100 Battery Grip for Nikon D3100 D3200 D3300 AS BG-2F SG-2F | Eachshot.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