The performance and reliability benchmarks reach new heights with the G20 Gen5 MOS, now equipped with the option to mount an optic. This compact-size pistol encompasses all the hallmark features of the Gen5 series, the latest GLOCK nDLC surface finish, distinguished for its exceptional hardness and rust resistance, the high traction Gen5 frame texture, a rapid reversible magazine catch, an ambidextrous slide stop lever, the adaptable GLOCK Modular Backstrap System (MBS) for personalized operator comfort, the universally acclaimed GLOCK Safe Action System and easily visible orange magazine followers.