Springfield Armory ECHELON 4.5 F Fullsize Aimpoint COA

The Springfield Echelon Fullsize with Aimpoint COA is a new and innovative pistol with an integrated A-CUT interface and pre-mounted red dot sight. Manufactured by the Croatian company HS Produkt, which has a long-standing cooperation with Springfield in the field of handguns, the Echelon offers state-of-the-art manufacturing techniques, practical ergonomics, and modular design.

The centerpiece is the "Central Operating Group," the combined trigger unit with barrel mount and guide rails. This unit can be easily removed and thus swapped between frames. As a result, the frame no longer constitutes a significant part under German Weapons Law, since this function is fulfilled by the "Central Operating Group." This allows the shooter to legally switch between different frames in various colors and sizes. The unit is made of stainless steel. The standard configuration always includes the medium frame, and each Echelon is delivered with three interchangeable backstraps so the shooter can customize the grip to their preference. The feel itself is optimized for use under all (rough) conditions. It not only offers optimal grip for the shooting hand but also features texturing in various areas of the frame to provide secure hold for all fingers and the support hand.

All controls are ambidextrous. Even the magazine release button does not need to be modified, a real plus for left-handed shooters. The trigger guard is enlarged and can be operated with gloves. The slide is heavily textured to facilitate easy racking. The slide has integrated serrations front and rear to ensure the hand sits securely when manipulating the firearm. The fixed steel sights are height- and function-matched to the pre-mounted Aimpoint COA. The cold-forged barrel and slide are Melonite coated—for high corrosion resistance and durability.

Unlike the standard model, this variant is delivered with the A-Cut optic interface and comes factory-equipped with an Aimpoint COA.

COA stands for Clever Optics Advancement, and the name truly fits: The small optic offers outstanding and highly shot-resistant construction, combined with a clean 3.5 MOA red dot that can be quickly and securely operated via side push buttons. The sight is "hooked" into the slide and secured by the screwed rear sight. The advantage over all sights with screws directly in the frame: The structural integrity of the sight is significantly increased, allowing for higher shot loads. Potential weak points caused by drilling are avoided. The sight withstands stresses according to MIL-STD-810G, 514.6E-1 Category 24.

A detailed product description of the COA can be found here.

Available in 3 frame sizes depending on the selected variant:

C, Compact
short frame (15rd magazine), short dustcover (4" slide)


FC, Crossover
long frame (18rd magazine), short dustcover (4" slide)


F, Fullsize
long frame (18rd magazine), long dustcover (4.5" slide)

Order here as an authorized purchaser, simply online:
ECHELON 4.5 F Fullsize Aimpoint COA

Also available with INSTALLMENT PAYMENT on request!

Product details:

Springfield Echelon Compact 4.0 FC COA

9mm Luger
made by HS Produkt, Croatia


Barrel length: 4.5" / approx. 11.43cm
modular frame

medium frame installed


3 backstraps included
A-Cut optic mount

with pre-mounted Aimpoint COA
3.5 MOA red dot
5 years battery life


aggressive texture on the slide

for secure handling


special frame structure

for firm grip under
adverse conditions


fully operable on both sides

no conversion necessary


rigid steel sights

adjusted for the Aimpoint COA


2 magazines included
Color: black

barrel & slide with Melonite coating


Weight: approx. 680g

with short magazine

Other: The listed firearm prices are plus €34.90 firearm shipping within Germany. Our terms and conditions apply.
Product safety information: Information according to EU Product Safety Regulation (GPSR)

Manufacturer: HS PRODUKT d.o.o., Ulica Mirka Bogovića 7, 47000 Karlovac - Croatia, https://www.hs-produkt.hr/

Importer: crogun-Verwaltungs GmbH, Karlstr. 77, D-72766 Reutlingen, Germany, https://www.crogun.de/

Responsible person: crogun-Verwaltungs GmbH, Karlstr. 77, D-72766 Reutlingen, Germany, https://www.crogun.de/
WARNING: Proof of acquisition authorization is required to purchase this product!!!