I've got one sitting in the plastic stock. The plastic is kind of soft, but ergonomics are good for a hunting stock. I cut the LOP to 12.5" for my daughter, and filled the buttstock with fiberglass cloth and epoxy then reinstalled the recoil pad. Worked well.
Traditional stocks for your rifle - Bell & Carlson, Oregon Gunsmithing, Boyds, and factory. (that's all I know)
Chassis - Brownells BRN 1, and the Sharps Bros Heatseeker (looks cool and to the be the most functional), MDT LSS-XL gen 2, and oryx
Bottom metal - detachable - Jefferson Outdoors and DIP - I had the DIP and their mag release and it is light years better than the factory water gun plastic junk.
There are 2 BDL hinged aluminum floor plates available - Oregon Gunsmithing and Jefferson Outdoors. After an accidental mag dump while shooting at a coyote 2 years ago I sold the DIP and bought Jefferson's bdl floor plate - awesome, and IMO the only way to go for hunting.
Jefferson Outdoors has developed a DBM that uses the metal CZ mags. He plans to bring those to market.
Good luck, and I hope you enjoy the little rifle - I love mine.
BTW, a month or so ago I sent Legacy Outdoors a message asking if they were going to release the 6mm ARC in the mini and they said ETA is Spring 2022. Sign me up!