\\\\\\\"TEC-HRO lift 2.0\\\\\\\" is a variable, adjustable front-stock elevation, which in addition in their second-generation also longitudinally pivotably!
With \\\\\\\"TEC-HRO lift 2.0\\\\\\\" you have the possibility to adjust the hight of your front-stock so that the lever-proportion (underarm, stock and sling-pull...) at best can be coordinated.