You will almost definitely lose some performance compared to using the SCH 40 or integrated Wye hopper that Silly included in his files, but if you too are wary of repeatedly removing screws from printed plastic in order to swap out muzzles, or just love all things modular then this is the part for you.
Tried to keep the spirit of making it still able to fire Titan rockets (with the barrel removed of course), but I don't actually own any to test it.
*UPDATE*: I've updated the design a bit, to use less material when printing, and added two different versions where the thread is positioned to allow for the hopper to land on either the left or right side of the PBR Bow respectively when fully threaded on. I'm unsure how this will interact with other blasters I only have the PBR Bow and it's thread positioning to test with.
NOTE: In case it's not clear, this requires Sillybutt's BarrelNut from the PBR Bow files, as it is a remix of his Wye Hopper design.
The author remixed this model.
Combined a Wye hopper into the shell of a Titan barrel.