"The original Echelon set the benchmark for service-weapon performance. Now, the Springfield Armory Echelon 4.0C Semi-Auto Pistol with Gear Pac is here with all the hallmarks of the full-sized model but in a compact package that's built for concealed carry. The 4.0C is shorter at the frame and muzzle, so it stays hidden beneath layers. Like the original, it's built around the Central Operating Group that can be easily moved between grip modules in seconds and features the Variable Interface System for easy attachment of over 30 red dots without the need for an adapter plate. The 4"" cold hammer-forged, Melonite-coated barrel shaves half an inch off the original's length, but still puts your shots right where you want them. Tritium luminescent front sight and Tactical Rack U-Dot rear sight provide low-light targeting. Fully ambidextrous controls. Billet machined slide with Melonite finish. Gear Pac includes a Viridian RFX11 Green Dot Optic, 4 magazines, and soft carry case. Compact variant of the Echelon Variable Interface System for red-dot attachment with no adapter plates Central Operating Group allows for changes in grip module, etc. 4"" cold hammer-forged, Melonite-coated barrel Ambidextrous controls Tritium luminescent front sight/Tactical Rack U-Dot rear sight Billet machined slide with Melonite finish Includes Viridian RFX11 Green Dot Optic, 4 mags, and soft carry case"