Yep, TSE has lots of Nighthawk 1911 mags. They look to be the same ones as made by Act-Mag for Novak, Wolff, etc.
I have a couple of Wolff marked ones for my Norinco. They are a quality magazine and run flawlessly with RN or truncated cone bullets, but not as well with SWCs. The Norinco magazines, which have the old GI-style tapered feed lips, run well with SWCs.
Results, of course, may vary depending on your gun.