Area 419 Railchanger X D-Bag By Cole Tac Black. It contours the bag and provides a solid base on barricades without adding a lot of overall height to your rifle system. Made of waxed canvas and filled (fill volume is externally adjustable) with a special blend of poly beads and sand-like material these are a great option for someone wanting a more minimalist approach to the RailChanger X. Specifications for Area 419 Railchanger X D-Bag By Cole Tac: Manufacturer: Area 419 Color: Black Fabric/Material: Poly Blend Weight: 4.5 lb Condition: New External Dimensions: 9x5x2 in Country of Origin: USA Gun Type: Rifle Package Contents: Area 419 Railchanger X D-Bag By Cole Tac Area 419 419-CT-DBAG: Railchanger X D-Bag By Cole Tac Black