Sennheiser MZQ 600 Microphone Clamp 505571 B&H Photo Video
Amazon.com: Movo SMM1 Microphone Shock Mount with Camera Cold Shoe for Shotgun Microphones 19-25mm in Diameter (Including Rode NTG-1, NTG-2, Sennheiser MKE-600) : Musical Instruments
Amazon.com: BOYA Triple Mount Brackets ABS Plastic with Shoe Mount Adapter in Red & Black for BY-MM1 Mini Cardioid Shotgun Microphone and other Brand Similar Shotgun Microphones (3 pack) : Musical Instruments
Best Shock Mount for Shotgun Mics (Location Sound) — Acoustic Nature