Smallrig has launched some new accessories for the Canon EOS R3, Canon EOS R5, and Canon EOS R6. All of these new items are available now for preorder.
SmallRig L-Bracket for Canon EOS R3 3628 $59
Arca-compatible side plate and base plate enable quick switch between horizontal and vertical orientation shooting.
Secured via a 1/4 screw and an anti-twist screw at the bottom.
Replace the battery without removing the L-Bracket.
Extendable side plate leaves room for cables.