Alternative grip modules give shooters the ability to find a configuration that fits them best. Each grip module accepts the Central Operating Group and all three backstraps. Each Echelon Grip Module ships with an ambidextrous magazine release pre-installed. Small, medium and large interchangeable backstraps are included with each grip module, allowing the shooter to further customize their grip. 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.