Ergo Grip Original SUREGRIP, Fits AR-15/M16, Rubber, Black 4011-BK 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.