The Accu-Tac 17S Spec-4 Bipod is built on the well-known BR-4 G2 platform, combining reliable performance with added versatility. With a 17S Spec adapter, this bipod ensures easy compatibility with all 17S Spec accessories, giving shooters unmatched flexibility to mount an Accu-Tac bipod on various firearms easily. RSR - ALN375-40