UPDATE: Sold out, but you can order now for the November 5th shipment. This has been very popular and sells quickly!
One very popular accessory for new EOS R5 and R6 owners has been the Sunwayfoto PCLO-R5 Arca/RRS Compatible L Bracket. This one-piece durable construction is compatible with Arca tripod mounts, enables access to all ports, and has built-in bubble levels. It’s back in-stock for $49.95 at Amazon (sold by 3rd party but fulfilled by Amazon), and is Prime eligible.
Only ten are in-stock at this time.
(Not to be confused with the Sunwayfoto PCL-R5, this recently released PCLO-R5 is a one-piece construction. The PCL-R5 is also a great product to consider as well, and currently in-stock at Adorama.)