The Finger Rest Extension from GAP Enterprises Inc. is designed for members of the law enforcement community and security professionals who demand the high-capacity firepower and require the original concealability of their Glock 26, 27 and 33 handguns. Field-tested for over two years and in current use by a wide spectrum of both undercover and uniformed police professionals, the FingerRest Extension offers the ultimate in concealable control.