Easy-to-Print, Easy-to-Assemble
The blunderbuss can be fit onto standard "large" printers such as the CR-10.
 
All pieces feature standardized alignment pegs that can be used to be perfectly glue or 3D weld the various pieces together. I would recommend printing these pegs at slightly higher infill than the rest of the print and using a strong adhesive such as super glue to ensure you dont have any flexture about any of the seams.
All the seams can be covered by bandages/wrapping. The in-game weapons heavily feature these soft fabric elements, so feel free to add that pleasing textural/soft element to your props.
 
Companion Weapon to Gehrman's Burial Blade
If you like this model, make sure to check out the Burial Blade here, my fully functional model of Gehrman's famous trick weapon.
 
Commission Piece
The Burial Blade and Gehrman's Blunderbuss were both part of a custom commission for a client. If you have a weapon or armor prop you want to see brought to life, contact me at josephaguilarsanchez97@gmail.com  where we can discuss how to give your favorite props the detail and functionality they deserve.
As most of my commissioned pieces end up being sold in my store as well, the price of commission is likely lower than you'd expect!