Palmetto State Armory has all your ERGO product needs! Keep your hand in the optimum position on your rifle 100% of the time. Use the hand stop to insure your rifle stays in your hands during the most slippery of situations or use the alternate function of being a barricade stop to brace the rifle on a barricade or wall corner. Aggressive textured front for enhanced traction on barricades and obstacles Low profile base also functions as a comfortable hand stop