DECEMBER 9, 2025

Springfield Armory Announces St. Louis County Police Department’s Adoption of Echelon 4.5F

GENESEO, ILL. – Springfield Armory® is proud to announce that the St. Louis County Police Department has adopted the Echelon 4.5F 9mm pistol.

The Echelon 4.5F was designed to set a new standard for modern, striker-fired duty pistols. With a host of revolutionary patent-pending features, this modular and highly adaptable handgun is engineered with superior ergonomics and built to withstand the harshest conditions.

Driving the modularity of the design is the Echelon’s patent-pending Central Operating Group. Employing cutting-edge manufacturing techniques, it’s an entirely self-contained and serialized stainless steel chassis. The result is a system that is easily moved between available grip modules in seconds.

To support this adaptability, the Echelon features interchangeable grip modules for a firearm that fits a wide range of officers’ hand sizes. The pistol comes standard with the medium grip and three interchangeable backstraps, while small and large grip modules can be purchased separately. The three backstraps are designed to fit all three grip sizes.

Further adding to the fully ambidextrous Echelon’s adaptability is its truly innovative Variable Interface System. This system employs patent-pending self-locking pins that exert lateral pressure on the optic’s interior mounting surface for consistent and reliable point of aim/point of impact. The pins can be positioned to fit the footprints of more than 30 popular optics, allowing for an unparalleled direct-mount fit.

“Springfield Armory has a strong commitment to supporting the law enforcement community,” said Fred Mincks, Springfield Armory’s Law Enforcement Sales Manager. “We are proud to have been able to provide such a capable firearm to the St. Louis County Police Department to help them keep their community safe.”

According to P.O. Jason Dite, department armorer for the St. Louis County Police, officers completing their transition training are extremely happy with the performance and shootability of the pistols, and appreciate how they can be tailored to fit their hands. In addition, they also noted the benefits offered by the “trench cuts” and slide serrations. Finally, he noted that the left-handed officers appreciated the ambidextrous controls.

“For any department looking for a new weapon system, we can highly recommend the Springfield Armory Echelon series of pistols as a durable, highly configurable platform that can fulfill multiple roles,” said Dite. “We look forward to continuing our partnership with Springfield Armory and the innovative Echelon models.”

To learn more about the Echelon 4.5F, please visit https://spr-ar.com/r/5608.

About Springfield Armory®

In 1794, the original Springfield Armory began manufacturing muskets for the defense of our young, free Republic. The Armory functioned as a firearms supplier for every major American conflict until 1968 when the government sadly closed its doors. In 1974, nearly two centuries after its inception, Springfield Armory Inc. in Geneseo, Ill. revived the iconic heritage of the Armory to carry on its legacy.

We strive to honor this responsibility as guardians of the original Springfield Armory legacy by manufacturing the highest quality firearms to enable responsible citizens to preserve their right to keep and bear arms in the defense of life, liberty and the pursuit of happiness.

With an unmatched emphasis on craftsmanship, performance and exceptional customer service, our mission is to forge superior firearms and provide the tools necessary to defend individual freedoms and equality for those who embrace the rights and principles secured by our Founding Fathers. For more information, please visit us at: springfield-armory.com.