Saber Tactical FX Impact Bag Rider ST0002
With this bag rider, you can easily adjust the height of your gun simply by sliding a shooting bag forward or back. It’s that simple to use and also simple to install. This item has proven its effectiveness in competition. Comes with a bag rider adapter for the FX grips.
Note: Will not fit guns with new FX branded grips
See https://sabertacticalinc.com/ for installation video/instructions.