Overview
Springfield Armory and Croatia's HS Produkt have collaborated on polymer-framed striker-fired handguns for 25 years, producing the XD series, Hellcat, and, since 2023, the modular Echelon. Our reviews of the 4.5F, 4.0C Compact, 4.0C Comp, and 4.0FC hybrid models found minimal issues – they perform reliably.
The guns are billed as "duty-grade," a claim that has been supported by their adoption by several large U.S. law enforcement agencies, including those in Henderson and St. Louis County. Overseas, the Echelon just earned a Spanish National Police Corps (Cuerpo Nacional de Policía) contract for over 6,000 pistols to replace older HK USP Compacts, beating out several big-name contemporaries submitted for competitive evaluation.
Now, with the exclusive one-year relationship between Aimpoint and Glock over, the former's excellent small-form COA enclosed red dot is available for use with the Echelon line – factory installed. Springfield this week debuted three new COA-equipped A-Cut footprint Echelon models: the full-sized 4.5F, hybrid 4.0FC, and compact 4.0C pistols. The MSRP across the line is $1,119, which is a deal considering the published price for the COA direct from Aimpoint is $617, while the standard Echelon models start at $710, pointing to an easy $200 savings.
For full disclosure, Springfield sent Guns.com this Echelon COA 4.0C for review purposes. All testing was done on this one pistol, which has been under evaluation since mid-February 2026.
Besides the Echelon, Springfield tells us COA models are also inbound for the XD Mod 4 and Prodigy series guns in the coming months.
Why the COA?
First off, let us talk about the Aimpoint COA and why it is a big deal. First introduced at SHOT '25, the 3.5 MOA COA red dot eschews plate systems and direct mounts into its distinctive A-Cut via a wedge system that helps eliminate movement. With a 15x15 mm aperture, the ultra-compact 7075-T6 aluminum housing is fully sealed and rated as being submersible to 80 feet or so, and offers much the same performance as Aimpoint's "bomb-proof" ACRO but in a smaller package with a deck low enough to allow most irons to co-witness. The optic is billed as surpassing a 40,000-round endurance standard.
Features
Getting into the Echelon 4.0C itself, the serialized heart of the system is its internal fire control group, which Springfield calls its Central Operating Group. This sets it apart from many other polymer-framed striker-fired guns, such as the company's own XD and Hellcat series or Glocks. As the COG can be removed from the grip frame and swapped over to different-sized (or color, or aftermarket from the likes of Icarus Precision and others) grips in seconds, a user can better semi-customize their pistol.
Trigger
The Echelon's trigger offers a satisfactory feel for a striker-fired pistol, featuring a brief and light take-up that leads to a wall and then breaks at just under 5 pounds on average. The reset is concise with both tactile and audible feedback.
Reliability
We had zero malfunctions other than the slide failing to lock back on a couple of occasions on an empty magazine.
When it came to the COA, it came factory-installed on our test gun and once zeroed in, kept its 3.5 MOA point of aim across testing even though we made sure to rack the slide a few hundred times from the optic. We were not kind to it, but it never worked loose.
Accuracy
As mentioned above, once zeroed, the Echelon/COA combo delivered, keeping the optic's 3.5 MOA dot on the point of aim out to distance.
Pros & Cons
Pros
- Excellent optics mounting system.
- Reliable.
- Good ergonomics.
- Disassembles without pulling the trigger
Cons
- The trigger isn't bad, but could be better.
- Proprietary magazines that run $35.
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No other optics run the A-Cut footprint. (Locked into COA)
Conclusion
Glock and Aimpoint blazed a path for the COA – which we extensively reviewed here on the site – but soon all but pulled them from the market for one reason or another, discontinuing the Gen5s and not (as of 3/17/26) offering the package on the U.S. market for the Gen6.
Now we are seeing the COA in more places, which is good, and, when paired with the Echelon, is great.
Especially for the price.
About the only rocks we can toss at the gun is that the COA and its A-Cut, for now, is a double-edged sword, painting the owner into a corner without any other (as of 3/17/26) optics available for it. Of course, that could change in the coming months and years. Other than that, the only knocks we can give the gun are its $35 magazines and not amazing (but upgradable) trigger.
In closing, we've always found the Echelon to be a superior gun that is often overlooked in a crowded market. When paired with the Aimpoint COA, at a reasonable price, those sleeper days could be in the rear view.
