Shooters looking for storage compatibility in the familiar ERGO SureGrip configuration will find the Ergo 2 pistol grip will fit the bill. With a more rounded back than the Original ERGO SureGrip, the Ergo 2 features the hollow inner storage measurements of the traditional milspec A2 pistol grip. This helps make it compatible with many storage solutions that are available to the A2 style cavity. You still find the familiar finger grooves, upper extension, Overmolded SureGrip material and texture that has become synonymous with the Ergo brand.