GoPro The Frame for HERO3 / HERO3+ / HERO4 ANDFR-302 B&H Photo
Frame Mount for GoPro Hero 4, 3+, 3 – Wealpe
The Frames Mount Kit for GoPro HERO4 Session Cameras ARFRM-001 - Best Buy
Amazon.com : SOONSUN Frame Mount Extension for GoPro Hero 4 3+ 3 with Screen / Battery Extension - Use with LCD BacPac or Battery Extension - Includes Quick Release Buckle and Thumb Screw : Electronics