One example of a surgical stapler may include a first staple holder, a second staple holder opposed to the first staple holder a first feeder belt extending into the first staple holder, a second feeder belt extending into the second staple holder and staples affixed to and frangibly separable from each feeder belt. Another example of a surgical stapler may include an anvilless end effector that in turn includes two opposed staple holders at least one feeder belt extending into each staple holder, and staples frangibly affixed to each feeder belt.