Surgical instruments are disclosed which comprise an improved staple firing and/or tissue cutting member a surgical instrument, comprising: a first jaw comprising a distal jaw end；a second jaw movable relative to said first jaw to capture the tissue of a patient between said first jaw and said second jaw； and a firing member movable toward said distal jaw end during a firing stroke, wherein said firing member comprises: a coupling portion comprising a lateral recess and a mounting tab； and a firing bar comprising a first layer mounted to said coupling portion in said lateral recess and a second layer attached to said mounting tab.
