A buttress applier cartridge assembly configured for use with an end effector of a surgical stapler, wherein the buttress applier cartridge assembly comprises: (a) a buttress assembly configured to be selectively adhered to the end effector when clamping the end effector on the buttress applier cartridge assembly; and (b) a buttress applier cartridge selectively retaining the buttress assembly, wherein the buttress applier cartridge comprises: (i) a platform extending longitudinally from a proximal portion to a distal portion, wherein the platform is configured to selectively support the buttress assembly, wherein the platform is further configured to receive the end effector, (ii) an opening extending transversely from a first side of the platform to a second side of the platform opposite the first side of the platform, wherein the opening is configured to receive a curved tip of the end effector allowing at least a portion of the curved tip to pass through the opening from the first side of the platform to the second side of the platform, and (iii) an alignment feature connectable with the platform and extending proximally from the platform, the alignment feature located at a proximal end of the buttress applier cartridge and configured to contact a proximal edge of the end effector prior to clamping the end effector on the platform to guide the end effector into alignment with the buttress assembly supported by the platform prior to clamping the end effector. (a) a buttress assembly configured to be selectively adhered to the end effector when clamping the end effector on the buttress applier cartridge assembly; and (b) a buttress applier cartridge selectively retaining the buttress assembly, wherein the buttress applier cartridge comprises: (i) a platform extending longitudinally from a proximal portion to a distal portion, wherein the platform is configured to selectively support the buttress assembly, wherein the platform is further configured to receive the end effector, (ii) an opening extending transversely from a first side of the platform to a second side of the platform opposite the first side of the platform, wherein the opening is configured to receive a curved tip of the end effector allowing at least a portion of the curved tip to pass through the opening from the first side of the platform to the second side of the platform, and (iii) an alignment feature connectable with the platform and extending proximally from the platform, the alignment feature located at a proximal end of the buttress applier cartridge and configured to contact a proximal edge of the end effector prior to clamping the end effector on the platform to guide the end effector into alignment with the buttress assembly supported by the platform prior to clamping the end effector. (i) a platform extending longitudinally from a proximal portion to a distal portion, wherein the platform is configured to selectively support the buttress assembly, wherein the platform is further configured to receive the end effector, (ii) an opening extending transversely from a first side of the platform to a second side of the platform opposite the first side of the platform, wherein the opening is configured to receive a curved tip of the end effector allowing at least a portion of the curved tip to pass through the opening from the first side of the platform to the second side of the platform, and (iii) an alignment feature connectable with the platform and extending proximally from the platform, the alignment feature located at a proximal end of the buttress applier cartridge and configured to contact a proximal edge of the end effector prior to clamping the end effector on the platform to guide the end effector into alignment with the buttress assembly supported by the platform prior to clamping the end effector.