The ERGO SUREGRIP AR15/M16 Grip Kit is a simple, ergonomic upgrade for your AR-15. The textured rubber grip ensures a soft, positive grip surface under all conditions, reducing fatigue, and improving comfort. The original ergonomically designed ERGO Grip fits all AR-15/M16 rifles. Each ERGO Grip comes with their patented GAPPER and uses existing grip hardware for installation.