Like the first comment said, the system is Arca Swiss. You could just buy one of these and stick it on the tripod and the RS2 plate will fit in. That’s what I’m currently using to be able to switch from Ronin to Tripod quickly.

https://www.amazon.com/dp/B00MV1SYCC/ref=cm_sw_r_cp_api_fabc_RhBWFbT6CM14W

But you won’t be able to fit the aftermarket plate into the RS2. DJI always tweaks their mounts to fit into other products, but other products rarely fit back into their mounts.