Kyle Hopp, commercial manager for Glock, shows off the company's new Modular Optic System, or MOS, Jan. 18, 2016, at SHOT Show's range day outside Las Vegas.

GLOCK, Inc.'s Slimline GLOCK 43X and GLOCK 48 are now available in the Modular Optic System (MOS) configuration. These slim 9X19 pistol models feature a micro-optic-ready factory ...

GLOCK, Inc.'s new Modular Optic System (MOS) was designed by GLOCK engineers to enable users to mount their preferred reflex sights to their pistol in order to improve their target acquisition ...

Glock's new Modular Optic System is the company's factory mounting system for mini red dot sights. The first pistols to have this option are Glock's long-slide variant pistols in 9mm, 40 S&W, .45 ...

Glock has added the Glock 26 and the Glock 34 Modular Optic System (MOS) to its Generation 5 pistol family, bringing the number of 9x19 caliber pistols in the Gen5 family to four.

Kyle Hopp, commercial manager for Glock, shows off the company's new Modular Optic System, or MOS, Jan. 18, 2016, at SHOT Show's range day outside Las Vegas.

Here at Milipol in Paris, GLOCK is also featuring Gen4 pistols that feature what is called Modular Optic System configuration. This simplifies the mounting of popular optic sights, which can help ...

BIXBY, Okla. — Bixby Police Officers are now using new Glock 47s with a Holosun Solar Charging Modular Optic System. In layman’s terms, it is a solar-charged sight that attaches directly to ...