NAACO 20's were built in Toronto. Have seen more than one requiring a magazine...
Like Archer, have had a 10 (single shot model) pass through here. Accurate, well finished rifles. Comparable to the Lakefield, but much more difficult to find bits n' pieces for. When I last checked Numrich, they had some parts for magazines, but no bodies or complete magazines.
Don't seem to garner the same attention as the Lakefields, or Cooeys but are good little rifles.