The Glock G45 Gen5 MOS compact crossover pistol in 9mm Luger with a 4.02-inch barrel and black finish (brand part no. PA455S201MOS) combines a compact slide with a full-size frame, giving shooters a longer sight radius and grip without the longer slide length of a full-size duty gun. Glock machines the MOS slide to accept optic adapter plates for direct red dot mounting, and the flared magwell along with the Glock Marksman Barrel’s polygonal rifling round out the Gen5 refinements. Ambidextrous slide stop levers and interchangeable backstraps support shooters of any hand size or dominance, and the package includes one adapter plate, three magazines, a mag loader, a cleaning kit, a pistol case, and a gun lock. Among MOS crossover semi-auto handguns, this G45 configuration favors shooters who want a full-size grip with a compact slide.

Key Specifications

• The chambering is 9mm Luger, with a capacity of 10+1 rounds.
• The barrel measures 4.02 inches, using the Glock Marksman Barrel polygonal rifling.
• The slide is MOS-cut, accepting optic adapter plates for red dot mounting.
• The frame combines a compact slide with a full-size grip.
• The kit includes an adapter plate, three magazines, a mag loader, a cleaning kit, a case, and a gun lock.
• The safety is Trigger/Firing Pin/Drop.
• The sights are FIXED.
• The barrel finish is Black.
• The action is semi-auto.
• The trigger type is Striker Fired.
• Ships with 3 10-round magazines.

Frequently Asked Questions

What does MOS mean on this pistol? Modular Optic System — the slide is machined to accept adapter plates for mounting a red dot optic.

What’s included in the box? One adapter plate, three magazines, a mag loader, cleaning kit, pistol case, and gun lock.

Buy the Glock G45 Gen5 MOS Crossover Pistol

A compact slide on a full-size frame for a longer sight radius without the longer length is exactly what this G45 Gen5 MOS Crossover delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.