A loading unit configured for engagement with a surgical instrument, the loading unit comprising: a proximal body portion defining a longitudinal axis (A-A); an end effector disposed in mechanical cooperation with the proximal body portion, the end effector including a cartridge assembly and an anvil assembly, one of the cartridge assembly and the anvil assembly being movable with respect to the other of the cartridge assembly and the anvil assembly between an open position and an approximated position to capture tissue therebetween, the cartridge assembly configured to house fasteners therein; an actuation sled longitudinally translatable within the cartridge assembly; and pushers disposed within the cartridge assembly, the pushers arranged in at least first and second rows, each pusher including a surface configured for engagement with the actuation sled, wherein a camming surface of each pusher in the first row is longitudinally aligned with a camming surface of each pusher in the second row, the first row of pushers laterally offset from the second row of pushers, said loading unit being characterized in that the camming surface of each pusher includes a first camming surface and a second camming surface, and wherein each pusher includes a body portion including an upper edge configured to engage a fastener, a lateral extension extending perpendicularly from the body portion, a first leg extending in a first direction from the lateral extension and including the first camming surface, and a second leg extending in a second direction from the lateral extension and including the second camming surface, and in that planar upper surfaces of the first leg and the second leg of pushers are parallel to upper edge of the body portion, but are not co-planar with the upper edge. a proximal body portion defining a longitudinal axis (A-A); an end effector disposed in mechanical cooperation with the proximal body portion, the end effector including a cartridge assembly and an anvil assembly, one of the cartridge assembly and the anvil assembly being movable with respect to the other of the cartridge assembly and the anvil assembly between an open position and an approximated position to capture tissue therebetween, the cartridge assembly configured to house fasteners therein; an actuation sled longitudinally translatable within the cartridge assembly; and pushers disposed within the cartridge assembly, the pushers arranged in at least first and second rows, each pusher including a surface configured for engagement with the actuation sled, wherein a camming surface of each pusher in the first row is longitudinally aligned with a camming surface of each pusher in the second row, the first row of pushers laterally offset from the second row of pushers, said loading unit being characterized in that the camming surface of each pusher includes a first camming surface and a second camming surface, and wherein each pusher includes a body portion including an upper edge configured to engage a fastener, a lateral extension extending perpendicularly from the body portion, a first leg extending in a first direction from the lateral extension and including the first camming surface, and a second leg extending in a second direction from the lateral extension and including the second camming surface, and in that planar upper surfaces of the first leg and the second leg of pushers are parallel to upper edge of the body portion, but are not co-planar with the upper edge.