TTL Shoe Mount Flash with 52mm Lens Kit for Nikon D3100 D5500 D5300 D5200 D5100 D7000 D7100 D7200 - Walmart.com
TTL Shoe Mount Flash + 52mm Lens Kit for Nikon D3300 D3200 D3100 D5500 D5300 718174962757 | eBay
For Nikon D3100 Top Cover Top Shell Function Button Mode Dial Flash Shell Assembly Original Genuine - Buy For Nikon D3100 Top Cover Top Product on Alibaba.com
Amazon.com : Voking VK750II TTL Camera Speedlite Flash Compatible with Nikon D3500 D3400 D3300 D3200 D3100 D5600 D7100 D7200 D5300 D5500 D500 D850 D750 and Other DSLR Cameras : Electronics
Flash Bundle Kit For Nikon D3100 D5100 Digital SLR Camera Includes DF-383 Dedicated TTL Bounce Power Zoom Flash Includes Flash Diffuser + Off Camera Shoe + Flash Bracket - foiltyure