Springfield Armory Echelon 4.0C Comp COA 9mm Luger 4" 18+1 Semi-Auto Pistol

The Springfield Armory Echelon 4.0C Comp COA is a striker-fired, semi-automatic 9mm Luger compact pistol engineered around an integral single-port compensator that redirects gas upward to flatten muzzle rise and reduce felt recoil. The 4" hammer-forged steel barrel carries a Melonite finish and a 1:10 twist rate, delivering consistent accuracy across defensive, duty, and range loads.

The Echelon 4.0C Comp COA pairs a high-strength polymer frame with a billet-machined slide finished in Melonite and cut optics-ready from the factory. This COA variant ships with the Aimpoint COA red dot optic installed - a purpose-built sight system designed specifically for the Echelon platform. The slide profile is slim and easy to manipulate, and the factory-installed optic provides a ready-to-run aiming solution.

With an 18+1 capacity, this pistol ships with two magazines - a flush-fit 15-round and an extended 18-round - so the shooter can choose carry-friendly concealment or full-capacity duty use straight out of the box. Overall length is 7.25" and the unloaded weight is approximately 24 oz, placing the 4.0C Comp COA squarely in the compact defensive category while remaining easy to shoot and control.

Built in the USA by Springfield Armory, the Echelon 4.0C Comp COA is a current-production factory pistol with the Aimpoint COA optic installed and ready to run.

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