This nosecone and payload bay in one was taken from a cirrus dart kit that is no longer in use. It is about 8 oz, in other words, rather heavy. The cirrus dart uses a solid plastic nosecone. This will be used in addition to the stock nosecone for the thunderbolt 38mm kit when it flies soon.
Clearly it has not been finished yet, one more coat is in order and then a layer of epoxy to lock everything up and make it shine.