The spent case catcher that Dragon seems so proud of may not be included on this if I can't figure out a way to bend PE around this spindly little thing, which is made up of three plastic parts and four PE parts. Dragon pre-forms some of the PE, but they don't do a very good job of it.
More progress. The 20 mm done, as vile and techy an assembly as Dragon has ever dreamed up. The spent cartridge container went to pieces under the attempt to bend the PE as I more or less expected. Perhaps I'll try to scratch one out of wire that'll be a bit more durable