A loader may be provided having two or more shell segments or sections separable from each other, wherein the shell segments help define an internal chamber of the loader that is capable of housing a quantity of ammunition for a connected gun. A spacer ring can be provided to fit between at least two of the shell segments. The spacer ring may include connection mechanisms replicating connection mechanisms of the shell segments. When the loader shell segments are reattached having the spacer ring arranged therebetween, the capacity of the loader may be increased.