... Could you share your original, solid part file of the Battle Rifle? I want to attempt what you are doing, but with a few tweaks:
* Adjusting the slicing of pieces to match my maximum build envelope (varies by printer)
* Adjusting the slicing of pieces to align with details on the gun, to help hide seams
* Adding interlocking features between pieces to ensure a strong connection, proper alignment, and easy assembly.
I might even play around with making the magazine removable... or hollowing out the ammo readout screen to allow some LEDs to backlight a static display.