This is my preferred choice of a grip size on the Echelon the compact 15rd grip is too short. Shorter than my Glock 19 and I pinch my finger when inserting a magazine. I would only by the 17rd grip in this model unless you have smaller than average hands. I stock firearms that I like for the most part. I have handled probably 20k+ guns in my life so far.
 
Springfield, Echelon 4.0 FC, Semi-automatic, Striker Fired, Full Size, 9MM, 4" Barrel, Melonite Finish, Black, Optics Ready Slide, Front Tritium Night Sight, Tactical Rear U-Dot, Viridian RFX11 Red Dot, 4 Magazines, (3)-17 Round and (1)-20 Round


    Tritium/Luminescent Front Sight with Tactical Rack U-Dot Rear
    Optics Ready
    Full-Size Grip Module with Compact Dust Cover
    Includes 4 Magazines, Viridian RFX11, and Pistol Bag

Product Description

Engineered to merge full-size capacity with a compact slide assembly, the Echelon 4.0FC pairs a 4-inch barrel with a full-length grip. At its core is Springfield's Central Operating Group, providing a serialized foundation for modular performance. The revolutionary Variable Interface System enables direct-mount compatibility with a wide range of today's leading optics. Fully ambidextrous and equipped with tritium/luminescent U-Dot sights, the 4.0FC delivers duty-grade capacity with fast handling in a balanced, do-it-all platform.

Specifications
UPC    706397002848     
Manufacturer    Springfield
Manufacturer Part #    EC9409BFC-PAC     
Model    Echelon 4.0 FC
Action    Semi-automatic     
Type    Striker Fired
Size    Full Size     
Caliber    9MM
Barrel Length    4"     
Color    Black
Capacity    20 Rounds     
Accessories    4 Magazines, Optic & Range Bag
Description    Optics Ready     
Sights    Night Sight Front Only
Subcategory    Pistols - Polymer Frame     
Finish    Melonite