GLOCK 45 Gen6 COA 9mm 4.02" Pistol w/ Aimpoint COA Red Dot & 3 Mags

The GLOCK 45 Gen6 COA 9mm semi-automatic pistol represents the latest evolution of GLOCK's popular crossover handgun platform, combining a full-size grip frame, compact-length slide, and factory-installed Aimpoint COA 3.5 MOA enclosed red dot sight. Chambered in 9mm Luger, this sixth-generation pistol incorporates GLOCK's newly refined ergonomic frame, upgraded RTF6 grip texture, flat-faced trigger, and advanced Aimpoint A-CUT direct-mount optics system. Offered in Factory New condition, this model brings together the familiar G45 crossover configuration with GLOCK's newest generation of engineering and Aimpoint's specialized pistol optics technology.

Sixth-Generation GLOCK Engineering: Officially introduced in December 2025, the GLOCK Gen6 series represents the company's next generation of polymer-framed, striker-fired pistols. Building upon decades of GLOCK development, the Gen6 incorporates substantial ergonomic refinements, a redesigned grip profile, improved slide serrations, a flat-faced trigger, and revised optics mounting systems. The G45 Gen6 retains the crossover concept that made the original G45 distinctive, pairing the shorter G19-length slide with a full-size G17-style grip frame and standard 17-round magazine capacity.

Factory-Installed Aimpoint COA Optic: One of the defining features of this configuration is its Aimpoint COA 3.5 MOA enclosed-emitter red dot sight, supplied as part of the factory GLOCK and Aimpoint collaboration. The COA features a compact 7075-T6 aluminum housing and a fully enclosed optical system that protects the emitter from external debris, moisture, and environmental exposure. Its wide 15x15mm viewing window provides an unobstructed sight picture, while the 3.5 MOA red dot offers a practical aiming reference for handgun applications.

The Aimpoint COA incorporates 12 brightness settings, including eight daylight settings and four night-vision-compatible settings. Powered by a single CR2032 lithium battery, the optic has a manufacturer-rated battery life of up to 50,000 hours at the specified daylight setting. The optic is also rated for submersion to 25 meters and weighs approximately 1.7 ounces, including its battery. These specifications distinguish the COA from conventional open-emitter miniature reflex sights.

Aimpoint A-CUT Direct-Mount System: Unlike conventional GLOCK MOS configurations that use adapter plates, the G45 Gen6 COA incorporates a factory-machined Aimpoint A-CUT interface. This mounting arrangement uses a specialized dovetail and locking-wedge design to secure the optic directly to the pistol slide. The result is a low-profile mounting arrangement without an intermediate adapter plate. The optic's positioning also permits co-witnessing with the factory backup iron sights, maintaining a conventional sighting option alongside the red dot.

GLOCK Marksman Barrel and nDLC Finish: The G45 Gen6 features a 4.02-inch GLOCK Marksman Barrel (GMB), incorporating a precision-oriented rifling profile developed by GLOCK. The steel slide is treated with GLOCK's durable black nDLC finish, designed to provide resistance to corrosion and surface abrasion. Deeply angled front and rear slide serrations improve surface engagement during slide manipulation, while the compact slide length preserves the distinctive dimensions of the G45 crossover platform.

Enhanced Gen6 Ergonomics: The redesigned Gen6 polymer frame incorporates an ergonomic palm swell, enlarged beavertail, extended thumb-rest surfaces, and an undercut trigger guard. These refinements are intended to provide a more natural grip position while accommodating a variety of hand sizes. The new RTF6 grip texture combines two different texturing patterns and extends farther across the frame, including the upper grip and thumb-rest areas. Interchangeable backstraps provide additional grip customization.

Flat-Faced Trigger and Safe Action System: The G45 Gen6 incorporates GLOCK's redesigned flat-faced trigger, featuring a reduced trigger-reach distance and a broad trigger surface intended to promote consistent finger placement. The pistol retains GLOCK's established Safe Action system, which incorporates three independently operating passive mechanical safeties: the trigger safety, firing-pin safety, and drop safety. These safeties operate automatically as part of the pistol's firing mechanism without requiring a separate external manual safety lever.

Ambidextrous Controls: The G45 Gen6 features an ambidextrous slide-stop lever with enlarged surrounding protective contours, along with a reversible magazine-release button. The frame also incorporates a front accessory rail for compatible lights and accessories. Combined with its full-size grip, compact slide, and improved Gen6 texturing, these features distinguish the sixth-generation G45 from earlier configurations.

Factory Magazine Package: This model is configured for 17+1-round capacity and is commonly supplied with three 17-round detachable magazines. The magazines utilize GLOCK's traditional double-stack design, with a metal-reinforced body and polymer exterior. The factory COA configuration includes the installed Aimpoint optic and standard GLOCK pistol packaging and documentation.

Specifications:

• Manufacturer: GLOCK
• Model: G45 Gen6 COA
• Manufacturer Part Number: P64550B03DC8A3
• UPC: 764503068331
• Caliber: 9mm Luger / 9x19mm
• Action: Striker-Fired Semi-Automatic
• Operating System: Short-Recoil, Locked-Breech
• Barrel Length: 4.02 Inches / 102mm
• Barrel Type: GLOCK Marksman Barrel (GMB)
• Slide: Steel with Front and Rear Serrations
• Slide Finish: Black nDLC
• Frame: Black Polymer, Gen6 Crossover Configuration
• Grip Texture: GLOCK RTF6
• Grip Features: Palm Swell, Enlarged Beavertail, Extended Thumb Rests, Interchangeable Backstraps
• Trigger: Gen6 Flat-Faced Safe Action Trigger
• Safety: GLOCK Safe Action Three-Safety System
• Slide Stop: Ambidextrous
• Magazine Release: Reversible
• Accessory Rail: Integrated Frame Rail
• Optic: Factory-Installed Aimpoint COA
• Optic Type: Enclosed-Emitter Red Dot
• Reticle: 3.5 MOA Red Dot
• Mounting Interface: Aimpoint A-CUT Direct Mount
• Optic Housing: 7075-T6 Aluminum
• Optic Window: 15x15mm
• Optic Brightness Settings: 12 Total – 8 Daylight / 4 Night Vision
• Optic Battery: CR2032 Lithium
• Optic Battery Life: Up to 50,000 Hours at Specified Setting
• Optic Water Resistance: 25 Meters
• Iron Sights: Fixed Front and Rear, Co-Witness Compatible
• Standard Magazine Capacity: 17 Rounds
• Overall Capacity: 17+1 Rounds
• Standard Package: Three 17-Round Magazines
• Overall Length: 7.44 Inches
• Overall Width: 1.35 Inches
• Overall Height with COA: 6.26 Inches
• Weight with Empty Magazine and COA: Approximately 24.52 Ounces
• Color: Black
• Condition: Factory New
• Country of Manufacture: Austria

The GLOCK 45 Gen6 COA brings together the established G45 crossover platform, GLOCK's redesigned sixth-generation ergonomics, and Aimpoint's advanced enclosed-emitter optics technology. With its 4.02-inch GLOCK Marksman Barrel, full-size 17-round frame, flat-faced trigger, improved RTF6 grip texture, and factory-mounted Aimpoint COA, this configuration represents a significant evolution of the G45 design. The dedicated A-CUT mounting system and integrated factory optic distinguish this model from standard optics-ready GLOCK configurations.