<page_title> U.S. helicopter armament subsystems </page_title> <section_title> Designated Systems </section_title> <table> <cell> Helicopter Armament Subsystem, 2.75-Inch Rocket Launcher, M4 <col_header> Nomenclature </col_header> </cell> <cell> CH-34 Chocktaw <col_header> Primary Aircraft </col_header> </cell> </table>
XM4 is a 2.75-inch rocket launcher with CH-34.