Sonny Puzikas was the first person I heard use the term “Poor Man’s EO-Tech” in relation to the front-sight aperture on an AK many moons ago.
Coming from the AR school of thought, I was not sold on the ideal that you could neglect your rear sights and still make accurate shots.
I was soon proven wrong and shown how at 50+ yards this technique could put Combat Accurate (not sub-MOA groups) rounds on target, aka “Snap Shots”.