NEW Glock 17L Gen 5 MOS Hands On
This guide details the process of mounting an optic onto the Glock 17L Gen 5 MOS, drawing from expert insights provided by Lenny Magill. It covers the use of the Modular Optic System (MOS) and highlights considerations for different optic models like the Holosun 507 Competition and SCS, including potential co-witness issues with standard plates.













