Alternative grip modules give shooters the ability to find a configuration that fits them best. Available in small, medium, and large, each grip module accepts the Central Operating Group and all three backstraps.FeaturesIncluded Mag Release - Each Echelon Grip Module ships with an ambidextrous magazine release pre-installed.Three Backstraps - Small, medium and large interchangeable backstraps are included with each grip module, allowing the shooter to further customize their grip.Adaptive Grip Texture - Developed for the challenges of concealed carry, the Adaptive Grip Texture feels smooth to the touch until you apply pressure and engage the more aggressive texture just below the surface.