Canon EOS R5 Mark II: B&H Photo / Amazon / Adorama
Europe links: Erhardt | Calumet | Koch | WEX
Kolarivision published its full Canon EOS R5 Mark II teardown, which you can watch above or you can check out the images from the teardown on their site. Kolarivision does full spectrum and IR conversions and I own a Fujifilm camera they converted years ago, which works perfectly.