A surgical staple cartridge, comprising: a cartridge body comprising: a centrally disposed elongate slot configured to receive a tissue cutting member; an external cartridge sidewall portion (856, 876); and a cartridge wall portion of the elongate slot (852, 872) and wherein said surgical staple cartridge further comprises at least one staple driver (900a, 1310a, 1610a, 2110a, 2610a) slidably supported between said external cartridge sidewall portion and said cartridge wall portion of the elongate slot, said at least one staple driver comprising: a driver body (911, 1311, 1611, 2111, 2611) configured to operably support at least two surgical staples thereon, the surgical staples each comprising a staple crown and a proximal leg protruding from one end of the staple crown and a distal leg protruding from another end of the staple crown, said driver body comprising: at least two proximal support columns (918, 938, 958, 1328, 1358, 1378, 1398, 1628, 1658, 2128, 2146, 2156, 2166, 2176, 2626, 2656U), each configured to support one of the at least two proximal legs thereon; and at least two distal support columns (914, 934, 954, 1324, 1354, 1374, 1394, 1624, 1654, 2124, 2142, 2152, 2162, 2172, 2622, 2652), each configured to support one of the at least two distal legs thereon, wherein said driver body comprises at least two camming surfaces (974, 984, 1432, 1436, 1696, 1700, 2196, 2198, 2694, 2698) each extending along a respective cam axis (FCA, SCA) that extends transversely between said respective proximal and distal support columns, wherein each cam axis (FCA, SCA) is parallel with the elongate slot, wherein a proximal support column (958, 1378, 1658, 2146, 2176, 2656) for one of the at least two surgical staples is slidably supported in one of the external cartridge sidewall portion and the cartridge wall portion of the elongate slot, and a distal support column (914, 1324, 1394, 1624, 2124, 2162, 2622) for another one of the at least two surgical staples is slidably supported in the other one of the external cartridge sidewall portion and the cartridge wall portion of the elongate slot. a cartridge body comprising: a centrally disposed elongate slot configured to receive a tissue cutting member; an external cartridge sidewall portion (856, 876); and a cartridge wall portion of the elongate slot (852, 872) and a centrally disposed elongate slot configured to receive a tissue cutting member; an external cartridge sidewall portion (856, 876); and a cartridge wall portion of the elongate slot (852, 872) and wherein said surgical staple cartridge further comprises at least one staple driver (900a, 1310a, 1610a, 2110a, 2610a) slidably supported between said external cartridge sidewall portion and said cartridge wall portion of the elongate slot, said at least one staple driver comprising: a driver body (911, 1311, 1611, 2111, 2611) configured to operably support at least two surgical staples thereon, the surgical staples each comprising a staple crown and a proximal leg protruding from one end of the staple crown and a distal leg protruding from another end of the staple crown, said driver body comprising: at least two proximal support columns (918, 938, 958, 1328, 1358, 1378, 1398, 1628, 1658, 2128, 2146, 2156, 2166, 2176, 2626, 2656U), each configured to support one of the at least two proximal legs thereon; and at least two distal support columns (914, 934, 954, 1324, 1354, 1374, 1394, 1624, 1654, 2124, 2142, 2152, 2162, 2172, 2622, 2652), each configured to support one of the at least two distal legs thereon, wherein said driver body comprises at least two camming surfaces (974, 984, 1432, 1436, 1696, 1700, 2196, 2198, 2694, 2698) each extending along a respective cam axis (FCA, SCA) that extends transversely between said respective proximal and distal support columns, wherein each cam axis (FCA, SCA) is parallel with the elongate slot, wherein a proximal support column (958, 1378, 1658, 2146, 2176, 2656) for one of the at least two surgical staples is slidably supported in one of the external cartridge sidewall portion and the cartridge wall portion of the elongate slot, and a distal support column (914, 1324, 1394, 1624, 2124, 2162, 2622) for another one of the at least two surgical staples is slidably supported in the other one of the external cartridge sidewall portion and the cartridge wall portion of the elongate slot. at least two proximal support columns (918, 938, 958, 1328, 1358, 1378, 1398, 1628, 1658, 2128, 2146, 2156, 2166, 2176, 2626, 2656U), each configured to support one of the at least two proximal legs thereon; and at least two distal support columns (914, 934, 954, 1324, 1354, 1374, 1394, 1624, 1654, 2124, 2142, 2152, 2162, 2172, 2622, 2652), each configured to support one of the at least two distal legs thereon, wherein said driver body comprises at least two camming surfaces (974, 984, 1432, 1436, 1696, 1700, 2196, 2198, 2694, 2698) each extending along a respective cam axis (FCA, SCA) that extends transversely between said respective proximal and distal support columns, wherein each cam axis (FCA, SCA) is parallel with the elongate slot, wherein a proximal support column (958, 1378, 1658, 2146, 2176, 2656) for one of the at least two surgical staples is slidably supported in one of the external cartridge sidewall portion and the cartridge wall portion of the elongate slot, and a distal support column (914, 1324, 1394, 1624, 2124, 2162, 2622) for another one of the at least two surgical staples is slidably supported in the other one of the external cartridge sidewall portion and the cartridge wall portion of the elongate slot.