Board Thread:Questions and answers/@comment-37017925-20200412035753/@comment-28773666-20200414160210

Sledgefire shells are smaller and are a single piece of plastic, Trilogy/Shellstrike shells are completely different but similar in design... Instead of being 1 piece they consist of 2 pieces and are quite a bit larger than Sledgefire shells, I am not sure WHY they chose to make them proprietary but they did.