DefinitelyI'll pick a discontinued product - shouldn't ruffle any feathers that way.
Python.
jam prone, underpowered, fragile.
say what you want about the glock and ak but you can fight someone in a (sandbox/mud pit/gravel pit) (buttstroke/pistol whip) them and kill them with one shot. the ar-15 not so much, and its more spendy to boot!