Sootch00's Springfield Echelon 4.0C COA Review: Worth Locking Into a Proprietary Optic?

Is Springfield’s compact Echelon actually worth pairing with Aimpoint’s proprietary COA — or are you locking yourself into a mount you’ll regret later? Sootch00 put the Echelon 4.0C with the factory Aimpoint COA on the range to find out, including a full teardown of the A-cut mounting system instead of stopping at a first-impression range dump.

Springfield Armory Echelon 4.0c COA Gun Review Watch on YouTube — sootch00 Channel

The short version of what he covers: Sootch walks the 4.0C’s ergonomics, chassis, and flat-face trigger (around four pounds on his gauge), then spends real time on the Aimpoint COA itself — enclosed emitter, 3.5 MOA dot, 50,000-hour battery, and the A-cut wedge mount that takes recoil load off the screws. He likes how thin the optic sits on the slide for carry, notes you keep a rear sight in the window, and flags the obvious catch: once the slide is A-cut, you’re married to that footprint. Grip-module swaps, field strip, and a range session with an Olight PLX on the rail round it out.

Here’s our take. The Echelon is the reason this video works, not the badge on the optic. Chassis, modular grip, and a gun that actually disappears in the hand are why people keep coming back to this platform — the COA package is a convenient way to leave the shop with an enclosed emitter already mounted, not the only way to run a dot on an Echelon. Sootch’s A-cut lock-in warning is the honest part: a bombproof mount is a real feature, and a one-brand footprint is a real tradeoff. Worth watching with your own carry gun in mind before you pay extra for a cut you can’t undo.

We don’t currently stock the factory COA-cut Echelon 4.0C package Sootch shot. We do stock the Springfield Echelon 4.0C — same compact pistol, optics-ready without locking you to Aimpoint’s A-cut. If you’re doing the grip-module swap he walked through, we have the Echelon grip module in stock. And if the COA itself is what you actually want, we stock the Ruger RXM with Aimpoint COA already mounted.