GRS Bag Rider can be mounted onto the Picatinny rail on the rear end of Bifrost, Warg, or Ragnarok stock.

We have also seen this bag rider used on other stocks as well.
This product installs in minutes and is a "must-have" when using a rear bag.
A GRS Rear Bag is a perfect match for a correct, smooth and frictionless recoil absorption.