Amazon.com : Alstar C Mount to 1.25" Video Camera Barrel Adapter Telescope Astrophotography - for one C-Mount (Male Thread) to 1.25" Eyepiece convertor for telescopes : Electronics
Best Video Camera for Shotgun Barrel with Training Technology – ShotKam — USA
Zeiss 120mm f5.6 S-Planar, Barrel 5902774 | Camera West
Indoor/Outdoor Power Adapter | Stick Up Cam Plug-In | Ring