You will find here all the necessary major parts of the GK1. You can build one from scratch, or you can combine some parts with others that you already have to make different variants. Each major part contains all the necessary parts that make them completely functional.

Note: Both calibers use the exact same mechanisms, except for one difference: the caliber engraving, which is subject to availability. Feel free to let us know your preferred engraving when you place your order. Just drop your preferences in the order notes, and we'll do our best to accommodate.