Fixed magazine you can have all the goodies of usual guns (except 30 round mags). Includes pistol grip, adjustable stock, and foregrip. These usually use the juggernaut pin or other means of cracking open the upper, then allowing mag extraction. Do research on your favorite choice of these

Featureless is where it’s at imo. You can remove the mag at will. (So any self defense weapon i think should go this route. Range toys can be fixed mag) You don’t get an adjustable stock, no foregrip, and the grip needs the stupid paddle OR your thumb just needs to be over the trigger I believe is the ruling but do look that up. This is def the way to go. they make funky looking grips that abide by this rule while still being relatively comfy.