I'll be honest, this is my first time creating a weapon. I understand that creating something as complex as Kalina Ann might be pushing it but I think it'd be a fun and challenging project.

http://images4.wikia.nocookie.net/__cb20110124162947/devilmaycry/es/images/e/ee/KalinaAnn.gif

I'm thinking to use a drain pipe for the main body and those cheap gun as the handle.
Also for the end I might use cardboard boxes or ferroche boxes like I saw someone use.

Howbeit, I really do not know what to do for the parts that wrap around the top part of Kalina Ann (the two strips of metal that holds the bayonet in place) and really the rest of it.
What should I use for the parts them I have not mentioned? Keep in mind that I cannot woodshop though I do have access to those kind of equipment.

Thank you for reading!

I'd get in touch with a guy called Ian Crichton, his blog is called Herr Doktor's Laboratory. He makes all kinds of steampunk weaponry, and his stuff is incredible.

Might also be worth looking at plumbing mountings and fixing in your local B&Q (or wherever) to see if there's anything similar. Drainpipe might be a bit too wide, but there's lots of piping types in hardware stores these days.