Glock G45 MOS Gen5 Compact Crossover 9mm Pistol, 4.02" Barrel, 17+1, Black (PA455S203MOS)
This Glock G45 MOS Gen5 is a compact crossover 9x19 pistol that combines a polymer frame with a steel barrel and a black-finished slide. It is configured with the MOS optics cut and includes the factory MOS adapter-set, along with three 17-round Glock magazines. Slide markings include "GLOCK", "45", "AUSTRIA", and "9x19".
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Specific Condition Notes: The firearm shows little sign of prior use and remains in excellent condition and function.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
What's Included
- Factory Glock polymer pistol case
- Original Glock manual/paperwork
- Glock MOS Adapter-Set (Modular Optic System) with adapter plates, screws, and hex key
- Glock magazine loader (speed loader)
- 3x Glock factory 9mm 17-round magazines (baseplates marked "1587-01")
Built on the Gen5 series, this G45 is a striker-fired pistol with Glock's Safe Action-style trigger and a listed 5.5 lb trigger weight. It also uses Glock's trigger safety system.
The MOS slide is cut for the Glock Modular Optic System and uses a cover plate secured by two screws. The slide also features serrations for added purchase during manipulation.
This example is equipped with iron sights: a front post with a white dot and a rear notch with a white outline in a U-style pattern. The pistol is finished in black with a black polymer frame.
The frame includes a molded accessory rail with a single cross-slot. The front strap shows no finger grooves, consistent with the stated Gen5 configuration.




