The buffer consists of a tube in which are placed successively from front to rear, the buffer head, a brass friction cup with concave interior and split to allow it to spring; a steel cone to fit into the cup. For of these ups and cones are placed one after the other. Next is the buffer spring and finally the buffer nut which is screwed into the end of the tube and forms a seat for the spring.
Lieutenant Colonel William E. Persons, Infantry Major Oliver S. Wood, Infantry Major Joseph Plassmeyer, Cavalry Captain Paul V. Kellogg and , Infantry First Lieutenant John E.McCammon Military Science and Tactics (, MO: The University Co-operative Store, 1922)
Courtesy the private collection of Roy Winkelman