The Hackathorn Set is designed for small frame Gen1-4 Glock pistols. It is compatible with a wide range of Glock models including the 17 19 22 23 24 26 27 33 34 35 37 38 and 39. This set features sights with green or green/orange color options offering enhanced visibility. The Hackathorn style sights incorporate night sight technology with tritium for optimal performance in low-light conditions.