Edgar Sherman Design Enhanced Foregrip 1.5 Picatinny Black. From the angle of the ESD EFG to the width its made with a human-centered design in mind. Its angle allows your wrist to be better aligned with your forearm thus strengthening your overall grip. The width of the ESD EFG fits perfectly with the length of the proximal phalanges of a users hand. This is important because it means your fingers are getting a more consistent and reliable grip than that of standard rifle grips. The ESD EFG has grooves all along the main curve and on the back of the grip. This allows for more consistency when your hands are wet or while wearing gloves. The grooves and the flat wall on the back section of the ESD EFG allow for more stability in unconventional shooting positions and on barricades. The hook on the bottom of the ESD EFG helps maintain a consistent placement of your hand without the risk of slippage during sustained fire. The hook also benefits the end-user when utilizing barricades to help capture and stabilize the firearm. The ESD EFG is made up of a Nylon material designed to withstand significant amounts of force and high temperatures. The material is known for taking abuse and when broken it tears vs cracking. This is important because if you do manage to damage your EFG it wont be rendered useless and will allow you to finish the job at hand. Specifications for Edgar Sherman Design Enhanced Foregrip 1.5 Picatinny: Manufacturer: Edgar Sherman Design Color: Black Finish: Cerakote Material: Nylon Fabric/Material: Nylon Country of Origin: USA Package Contents: Edgar Sherman Design Enhanced Foregrip 1.5 Picatinny Edgar Sherman Design EFG-1.5-PIC-BLK: Enhanced Foregrip 1.5 Picatinny Black