no it is just a lower receiver until someone builds it it is not a semi auto or a full auto weapon with out a lot of paperwork it can legally one be built as a semi Auto

I'd buy a forced reset trigger called a rare breeds trigger. It's not full auto but about as close as you can get without a huge huge Hassel. Hope this helps.

Damien, this lower can be built into a Full Auto option with the right parts. It is an $ endeavor and you would need to look at option (2) here : https://yestactical.com/how-to-make-an-ar-15-fully-automatic

No this is just a lower reciever, if you obtain an FFL you could build this into a full auto, you'd assemble it just like a semi auto AR but you'd install and auto sear, but it gets alot more expensive and complicated for a private citizen who doesn't possess a class 3 FFL, and SOT.
More info here
https://rocketffl.com/who-can-own-a-full-auto-machine-gun/