Fiber optic sight sets have the highest resolution. Model.215 Fiber Optic Front. These sights fit: Gen 1-3 G 17, 17C, 17L, 19, 19C, 20, 20C, 20S, 21, 21C, 21S, 22, 22C, 23, 23C, 24, 24C, 26, 27, 29, 29S, 30 (WILL NOT FIT the G43, G43X and G48).
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