Cole-tac Backbone Bag Frame Features The Cole-tac Backbone Bag Frame is a patented design that eliminates the need for straps attaching a support bag over the rifle or optic a common source of inconsistency in traditional bag setups. Instead the frame mounts directly to the rifle using either an American Defense Picatinny mount or an Area 419 ARCA lock mount giving shooters a direct secure connection point. This direct mounting approach removes the variability that strap based systems can introduce shot to shot supporting more consistent elevation control from a rear bag. The hard coat anodized finish on the metal frame resists wear and corrosion through repeated range sessions and field use. Four hook and loop straps secure the bag itself to the frame keeping it from shifting or sliding during recoil or repositioning. The frame s wide surface area is specifically designed to prevent bags from twisting which helps maintain a stable repeatable rest position shot after shot. At only 0.26 pounds the Backbone Bag Frame adds minimal weight to the overall rifle setup while delivering a meaningfully more stable support interface. For precision shooters looking to upgrade from strap based bag systems to a more secure direct mount solution the Backbone Bag Frame is a smart choice for sale at GrabAGun. Cole-TAC Backbone Bag Frame Specifications Manufacturer: Cole-TAC Model: Backbone Bag Frame Material: Metal Mount Type: ARCA Finish: Hardcoat Anodized Weight: 0.26 lbs Available At: GrabAGun