https://www.knightarmco.com/12627/shop/military/lamg

"constant-recoil/spring run-out operation"

I watched where Jerry Micilek shot it and the described it as a bufferless system. Does it have to be piston operated to work? A different bolt system?

I still have a hard time wrapping my head around BCG and Buffer weight, carrier bounce and gas regulation.

It has to be more complex than just a spring set-up that has increasing resistance to near infinite resistance as travel ends. The BCG and spring combo still has to get the bolt locked up securely.

It seems pretty slick not to have something like that on ARs. Or is this kind of what happens when you ween the gas down on an adjustable gas block?