Gun Racks / Vaults Robert Sentinel® proudly uses the Gun Grabber Military Grade Gun Grabber for their weapon racks. The Sentinel line of weapons racks can be customized to accommodate a wide variety of military arms storage, including M4, M9, M16A2, M870, AR series weapons and more. Summary Aggregate Rating5 based on 3 votes Brand Name The Gun GrabberProduct Name 110QRPrice USD 34.95Product Availability Available in Stock