Tech Sight's AK100Y adjustable aperture sights for Yugoslavian AK type Rifles Rear GI type aperture sight for your Yugo AK rifle. Faster target acquisition, Flip combat style, short, long range. Increases sight radius by 8" and accuracy, over standard AK sight Easy conversion with no permanent modification to firearm. No tools required for field stripping. Detent locking windage adjustments. All metal construction, Returns to zero after removal.