There have been several, but a recent one that comes to mind is the Hi Point 955 (9mm carbine). Picked up a new one when they were $189.00. Liked the way they handled, and figured it would make a good "poor mans home defense" carbine, and besides, I had thousands of rounds of 9mm ball ammo sitting around that needed shooting.
Mounted a cheap BSA red dot sight, and a pressure pad activated combat flashlight to it. Handled great, and was pretty accurate. Problem was it jammed at least once per magazine. Tried two factory 10 rounders, and a 15 round aftermarket, but never could get any reliability out of it. Ended up selling it to a guy who wanted a range plinking gun.
Larry