Night fision utilizes an injection molded process and military-grade polymer with durable polymer tritium outlines to give you flexibility and unrivaled daytime visibility.With the exception of the tritium vials, imported from switzerland, night fision products are crafted end-to-end right here in the usa.This night sight set is a square front and rear green tritium with a white outline, and fits glock models 17/17l/19/22/24/24/25/26/27/28/31/32/33/34/35/36/38/39 at suppressor height.Rear Color: Green with White OutlineType: Front/Rear SetFrame Material: SteelFrame Color: BlackFirearm Fit: Glock 34Style: SquareFront Material: TritiumRear Material: TritiumFront Color: Green with White OutlineWindage Adjustment: NoElevation Adjustment: NoFirearm Type: Pistol