RSR Group, Inc. is pleased to welcome Rock River Arms to its product lineup. With its extensive selection of AR-15 rifles, barrel assemblies and upper receivers, Rock River Arms offers a comprehensive product lineup for the tactical shooter. The innovative designs of Rock River Arms products, and the company's focus on providing the right fit, finish and function, make these guns an excellent value and a welcome addition to the RSR Group, Inc. product inventory selection. You’ll find them in the Online Catalog section of the RSR Group, Inc. Web site