Which cartridges, if you don’t mind me asking? Factory, or ideas of your own?

I am curious what such a design can do in larger and/or higher pressure cartridges. But I am also a fan of the smg for home defense idea.

9-Hole Reviews did a video on this about a month ago. Besides being cheaper, pistol caliber also has a lot less noise and flash. I agree with you, though, that if you’re getting an AR it should be in an AR (intermediate) caliber, because another main advantage of pistol caliber is the compactness and intuitive handling that come with putting the mag in the grip. My pistol-based SBR is 10 3/4″ in the stowed position vs just under 16″ for my AR SBR.

Lightness (and balance) matter a lot in CQB / home defense, when your support hand is constantly required to do tasks other than support.

Been doing so as well as a bunch of local ones here that have fun implications of the state using voluntary treatment against your ability to own firearms in the absence of a threat to self or others amongst other issues.

“By the time I can own a non mutilated version of anything like this in NY…”

It’s being worked on, including re-opening the select-fire registry.

Please consider financially-supporting the 2A rights orgs doing (what can only be described as) God’s work… 🙂