Cole-Tac Backbone Bag Frame

The frame is designed to be universal, but it works best with standard shooting support bags that utilize hook-and-loop attachments. Because it uses four adjustable straps, it accommodates a wide range of bag shapes and sizes securely.

Traditional straps often wrap over your optic or the top of the rifle, which can interfere with your sight picture or scope adjustments. The Backbone creates a rigid, dedicated platform that sits below the rifle, keeping your optics clear and preventing the bag from twisting or shifting during recoil.

The frame is sold with specific mounting interfaces. You will need to choose the version that matches your rifle's rail system—either the American Defense Picatinny or the Area 419 Arcalock—as they are not interchangeable on the same unit.

While it is built from durable, hard-coat anodized aluminum, the frame is designed to be lightweight and low-profile. It adds minimal weight to your rifle, making it suitable for both competitive bench shooting and field use where mobility matters.

Yes, the frame is compact, but you should ensure you have enough rail space available to accommodate the mounting footprint of the specific interface you choose. It is designed to mount securely without requiring a full-length rail.