Glock G45 Gen5 MOS — Compact Frame, 9mm, 17+1, 4.02" GMB Barrel, MOS Cut Serrated Steel Slide, Polymer Frame w/ Rail, Ambidextrous (PA455S204MOSPRESBB)

Meet the duty-proven, carry-ready hybrid that blends full-size capacity with compact control: the Glock G45 Gen5 MOS. Chambered in 9mm Luger with a 17+1 capacity and a fast-handling 4.02" Glock Marksman Barrel (GMB), the G45 pairs a compact slide with a full-size grip for exceptional shootability, quicker follow-up shots, and a confident purchase under stress. Add the Modular Optic System (MOS) cut and a serrated, nDLC-coated steel slide, and you’ve got a modern, red-dot capable sidearm purpose-built for defense, duty, and range performance.

Model / SKU: PA455S204MOSPRESBB | UPC: 810100237110
Caliber: 9mm Luger | Capacity: 17+1 | Barrel: 4.02" GMB

Why Choose the Glock G45 Gen5 MOS

• Red-Dot Ready (MOS): The factory MOS cut accepts popular red-dot footprints (with adapter plates), giving you quicker sight acquisition and target transitions.

• Glock Marksman Barrel (GMB): Enhanced rifling and crown deliver excellent accuracy and consistency from a compact-length barrel.

• Gen5 Enhancements: Removes finger grooves, adds an ambidextrous slide stop, flared magwell, nDLC finish, and a reversible mag release for modern ergonomics and durability.

• Full-Size Control, Compact Slide: The G45’s “crossover” layout (compact-length slide, full-size frame) offers a longer sight radius than subcompacts and a grip that’s easy to control with gloves or cold hands.

• Front & Rear Slide Serrations: Confident manipulations, press checks, and one-handed techniques—wet or dry.

• Accessory-Ready: A Picatinny-style frame rail lets you mount lights/lasers for low-light applications.

• Duty-Tough Reliability: Legendary Glock simplicity, easy field-stripping, and a track record for endurance with a wide range of 9mm loads.

Key Features at a Glance

• Caliber / Capacity: 9mm / 17+1

• Barrel: 4.02" Glock Marksman Barrel (GMB) for enhanced precision

• Slide: Steel, MOS cut, nDLC finish, front & rear serrations

• Frame: Polymer with Picatinny rail, full-size grip (Gen5 texture)

• Controls: Ambidextrous slide stop, reversible mag release

• Sights: Drift-adjustable Glock sights (optic-ready MOS platform for red dots with plates)

• Trigger: Safe Action® system with consistent pull

• Safeties: Triple internal (trigger, firing pin, drop safety)

• Finish: Black nDLC (slide); black polymer frame

• Model / SKU: PA455S204MOSPRESBB

• UPC: 810100237110

Built for Defense, Duty & Everyday Carry

The G45 Gen5 MOS is tuned for fast, repeatable performance. The flared magwell accelerates reloads, while the MOS system shortens your learning curve with modern optics. The nDLC finish increases wear and corrosion resistance, and the updated Gen5 frame texture provides a locked-in grip without aggressive abrasion on clothing. Whether you’re running irons or a micro red dot, the G45 keeps the sight picture stable and the recoil impulse flat.

Ideal Use Cases

• Concealed Carry (Full-Capacity): The compact slide carries close, while the full-size grip ensures control under pressure.

• Home & Duty: Rail-mounted lights + optic-ready slide = 24/7 readiness.

• Training & Competition: Excellent reliability and parts support, with broad holster and accessory compatibility.

Compatibility & Upgrades

• Optics: Compatible with leading micro red dots via MOS adapter plates (sold separately—confirm footprint compatibility).

• Lights/Lasers: Works with popular Picatinny weapon lights (check fit lengths).

• Magazines: Accepts Gen5 pattern G17 magazines; backward compatibility depends on mag body/cutouts.

• Backstraps: Interchangeable backstraps (if included) let you tailor reach-to-trigger and grip feel.

Specifications

• Manufacturer: Glock

• Model: G45 Gen5 MOS

• SKU: PA455S204MOSPRESBB

• UPC: 810100237110

• Caliber: 9mm Luger

• Capacity: 17+1

• Barrel Length: 4.02" (GMB)

• Overall Length: ~7.44"

• Height: ~5.47" (w/o optic)

• Width: ~1.34"

• Weight (Unloaded): ~24.5 oz (approx.)

• Frame: Polymer, black, with Picatinny rail

• Slide: Steel, MOS cut, nDLC, front & rear serrations

• Sights: Glock factory sights (optic-ready)

• Controls: Ambi slide stop, reversible mag release

• Country of Manufacture: Austria/USA (varies by lot)

(Dimensions/weights are typical for the G45 platform; small variances may occur.)

What’s in the Box*

• Glock G45 Gen5 MOS pistol (9mm)

• (Magazines quantity may vary by region)

• MOS plate documentation/tools (if included), backstraps (if included)

• Cleaning brush/rod, owner’s manual, factory case

*Exact contents vary by distributor/state compliance; check your retailer’s listing.

Care, Compliance & Safety

• Follow all federal, state, and local laws; ensure magazine and feature compliance for your jurisdiction.

• Perform a function check after mounting optics or lights.

• Use quality, SAAMI-spec ammunition and wear eye/ear protection at the range.

• Keep firearms secured and inaccessible to unauthorized users.

SEO Keywords & Phrases

Glock G45 Gen5 MOS PA455S204MOSPRESBB, 810100237110, G45 MOS 9mm 17+1, Glock Marksman Barrel 4.02", compact slide full-size grip Glock, Glock G45 optic ready, Glock MOS serrated slide, ambidextrous slide stop Gen5, Glock G45 Picatinny rail, best Glock for duty and carry.

Final Take

For shooters who want optic-ready speed, full-size control, and compact carry dynamics, the Glock G45 Gen5 MOS (PA455S204MOSPRESBB) is a standout. The 4.02" GMB barrel, MOS-cut serrated slide, ambidextrous controls, and 17+1 capacity deliver a proven, modern 9mm platform that’s ready for duty, defense, and serious range work—right out of the box.

"The End"