Glock G45 Gen6 COA: Factory Aimpoint, $1,053 MSRP

The G45 pairs a G17-length frame with a G19-length slide. You get the full 17+1 grip of the G17 with the shorter 4.02-inch barrel of the G19. Overall length is 7.44 inches vs. 7.95 inches for the G17, a 0.51-inch reduction that matters at the draw.

Competition shooters running Carry Optics have favored this configuration for years: the G45 clears duty holsters faster than the G17 while the G17-length grip eliminates the half-finger-off-the-grip penalty that the G19 imposes on shooters with larger hands. Law enforcement agencies picking up the G45 over the G17 are chasing the same tradeoff.

For a deep dive on how the Gen6 frame changes compare to Gen5, see our Glock Gen5 vs Gen6 comparison guide. If you already own a G45 Gen6 and are planning upgrades, the Glock G45 upgrades guide covers compatible sights, triggers, and accessories for the Gen6 platform.

The Aimpoint COA mounts directly into the Gen6 slide via the A-CUT standard. A full-length dovetail is machined into the top of the slide; the COA locks in via a front hook and a rear wedge. No adapter plates, no shims, no secondary fasteners. Glock and Aimpoint developed A-CUT jointly.

The rear wedge is the key engineering decision. On standard pistol optic mounts, the optic is held by screws that absorb shear forces from recoil. Under sustained fire, those screws back out and zero shifts. The wedge on A-CUT transfers lateral recoil forces into the dovetail wall itself, where they are spread over a large surface area. The screws become clamping fasteners, not shear fasteners.

The Aimpoint COA in the package ships with a 3.5 MOA enclosed red dot. Enclosed emitter means the optical channel is sealed, so rain, debris, and lens fogging are not factors. Battery life is rated at 50,000 hours on a single CR2032 on setting 6 of 12. The battery compartment is accessed without removing the optic from the slide. Four settings are NV-compatible. The optic co-witnesses with iron sights installed behind it, so the pistol remains functional if the optic fails.

Springfield Armory, Ruger, and over 30 other manufacturers now offer A-CUT variants. See our coverage of the Springfield 1911 DS Prodigy COA and Springfield Echelon COA for how the same mounting system performs on other platforms.

Glock announced Gen6 on December 6, 2025, with the G17, G19, and G45 as the initial models. Availability began January 20, 2026. The Gen6 updates address the five most common complaints about Gen5 grip feel and controls.

The RTF6 dual-pattern texture is the most visible change. It covers more surface area than Gen5, including a textured thumb rest on the dust cover that stabilizes the weak-hand thumb position. The palm swell is integrated into the grip panels and creates a more pronounced grip contour that pulls the pistol deeper into the hand on firing. The fixed enlarged beavertail, unlike the swappable beavertail extender on some competitors, is flush and does not catch on holster rigs.

The undercut trigger guard closes the gap between the frame and the guard, allowing a higher grip without knuckle-to-guard contact during heavy recoil. The flat-faced trigger with its consistent finger placement becomes standard; Gen5 shipped with a curved trigger as default. The enlarged slide stop lever guard reduces the probability of accidental slide lock activation under stress.

One caveat on upgrades: the Gen6 uses a different trigger housing and trigger bar than the Gen5. Most aftermarket triggers marketed as "Gen5 compatible" are NOT confirmed for Gen6 without the manufacturer explicitly listing Gen6 fitment. Verify Gen6 compatibility before purchasing aftermarket drop-in trigger units. Magazines, holsters, lights, optics, and controls that fit the G45 Gen5 continue to fit the Gen6 without changes.

The G45 Gen6 COA package retails at $1,053 at Brownells and comparable dealers, with inventory available at Glock Store, Impact Guns, and other major retailers. Glock does not publish an official MSRP on its product pages; the $1,053 figure reflects early 2026 street pricing across civilian dealers.

The Blue Label program, available to law enforcement, military, first responders, and certain other qualifying groups, lists the G45 Gen6 COA at $885.20 at Primary Arms. The standalone G45 Gen6 (without COA) runs approximately $699 at street pricing, making the COA package a roughly $354 premium over the base pistol. The standalone Aimpoint COA optic carries a $617 MSRP, so the combined package delivers the optic at significantly below standalone price.

Configure the G45 Gen6 with lights, a holster, and additional accessories using our pistol builder. The G45 Gen6 is already in the builder catalog with confirmed compatibility tags for Gen6-specific components.

Halifax Regional Police (HRP), the largest municipal police service in Atlantic Canada with approximately 650 officers, selected the Glock G45 Gen6 COA as its new duty pistol platform in 2026 following a competitive evaluation focused on safety, reliability, and ease of use. RAMPART, Canada's leading supplier of operational equipment to military and law enforcement, supplies the program.

The complete HRP package pairs the G45 Gen6 COA pistol with Streamlight TLR-7 X weapon lights, Safariland duty holsters, and Glock G45T training pistols for instructor and armourer training programs. The adoption follows a broader trend of North American and European law enforcement agencies transitioning to factory-optic-equipped pistols; the G45 COA validation from a major service is relevant for civilian buyers comparing the platform to competitors.

The G45 Gen6 COA is the right buy for three groups. First, buyers who want a factory-optic Glock without the MOS adapter stack. The A-CUT mount is lower and more mechanically secure than any plate-and-adapter solution; if you are going to run a red dot on a Glock, this is the right way to do it. Second, competition shooters building a Carry Optics setup who want a factory-ready platform and are not committed to the G34. The G45 frame gives the full mag capacity and full firing grip of the G17 with a shorter barrel that meets most Carry Optics division rules. Third, any shooter who was going to buy a G45 Gen5 and add an enclosed emitter anyway; at $1,053 vs. $699 (base) + $617 (COA standalone) = $1,316, the factory package saves $263.

The G45 Gen6 COA is not the right buy if you want maximum aftermarket trigger flexibility. The Gen6 trigger housing is not interchangeable with Gen5, and the aftermarket ecosystem for Gen6-confirmed triggers is significantly smaller than for Gen5 at the time of launch. If customizing the trigger is a priority, a G45 Gen5 MOS with an aftermarket enclosed emitter and a confirmed trigger remains the more flexible path.