devices , systems and methods of canting firearms such as rifles relative to fore grip having extendable and expanded legs . one version allows for a rocking and canting of the firearm by pivotally attaching an upper portion of the expanded legs . another version allows for a separate canting member to be clamped to both the upper portion of a vertical fore grip and to the lower mounting rail of the firearm . the canting member has portions that cant relative to one another . an operator can cant the firearm in a free - state or to fixed positions as desired .