A surgical staple cartridge comprising a cartridge body defining a cartridge axis and comprising a first cartridge wall and a second cartridge wall spaced from said first cartridge wall, said cartridge body further comprising at least two upstanding driver guides located between said first cartridge wall and said second cartridge wall. The cartridge further comprises at least one surgical staple driver, the surgical staple driver comprising a driver body comprising a proximal end configured to slidably engage one of said driver guides and a distal end configured to slidably engage another one of said driver guides. The surgical staple driver further comprising at least one staple support member configured to operably support a surgical staple thereon.
