Red Cross Dual Special

Bare with the zany mechanics here...

UPDATE: Due to popular criticism, I'm going to go ahead and say, despite what the gun says on its shell, it is a prototype that uses .223, and is the base prototype that could you can exchange the barrel/firing mechanisms be able to switch the type of ammo. Any further question of the Sci Fi /cool design excuse can be referred to Judge Dredd's weapon. It has all kinds of ammo types. I should really just rename the gun "the Controversy". I really do appreciate all the feedback though! Thanks!

Dual functioning long and short ammo weapon. Designed for one weapon to carry both ammo types for long and short range combat. Also using only 1 barrel they can both feed into. Using a magical mechanism for the forward rounds that seals the barrel up when not in use. It's sci fi, deal with it.

Based on a 3D rough you can find on my blog :[link]