The Springfield Armory Echelon 4.0C Comp is a compact 9mm Luger pistol built on a polymer frame with a steel slide and an integral single-port compensator. This Gear Pac configuration adds a Viridian RFX11 red dot on an optics-ready slide, along with a hammer-forged, Melonite-finished 4-inch barrel. It ships with four magazines and a pistol bag. 
 

Key Specifications 

• Brand: Springfield Armory 
• Model: Echelon 4.0C Comp 
• Caliber: 9mm Luger 
• Action: Semi Auto 
• Capacity: 10-Round 
• Barrel Length: 4" 
• Finish: Melonite 
• Frame Material: Polymer 
   

Detailed Features 

• Integral single-port compensator reduces muzzle rise for faster follow-up shots 
• Optics-ready slide comes mounted with a Viridian RFX11 green dot 
• Hammer-forged steel barrel has a Melonite finish for corrosion resistance 
• Captive recoil spring system simplifies takedown and maintenance 
• Ambidextrous controls and interchangeable backstraps fit a range of hand sizes 
• Gear Pac includes four magazines and a carry bag

Echelon owners generally like Springfield's fit and finish, and the 4.0C Comp version gets credit for how well the compensator tames muzzle flip in a compact 9mm. A few buyers note that a ported slide changes the report and blast compared to a standard Echelon, which is a trade-off carry shooters weigh carefully.

Grip feel is a common talking point: the interchangeable backstraps let owners dial in reach to the trigger, and the ambidextrous controls work well for left-handed shooters. The factory-included Viridian RFX11 is convenient for buyers who did not already own a red dot.

On value, the Gear Pac bundle of extra magazines, an optic, and a bag is popular with people who would otherwise buy those pieces separately, though some owners note holster options for the compensated slide are narrower than for the standard Echelon.