In the 1990's I chose to scratch-build from the ground up some modelguns of the rare, restricted, limited, prototype, or just plain unattainable types. This was a situation very similar to 1950's Japan so I wanted to see just how far my motivation, passion, improvisation, and skill was willing to go for the hobby. Here are some old pics of the results...
M-134 Minigun "Ol' Painless" Variant from "Predator"
Hawk MM-1 40mm Rotary Launcher from "Terminator"
Manville Rotary Launcher from "Dogs of War"
USAS-12 Shotgun (real firearm for scale comparison)
S&W AS-3 Shotgun (broken LS M-16A1 model rebuild)
Jackhammer Mk2
Jackhammer Mk1 (both are built with Super Soaker water guns)
XM29 OICW Gen1 and Gen2 by H&K (Top/Bottom)
XM29 SABR by Alliant Techsystems (Middle)
LS M-16A1/M203 and XM29 Gen2 for scale and measurement
OICW's & SABR are ready to be used on the promotion/release of console game "Ghost Recon Island Thunder"
No CAD and no digital printer were used in their build. 25-plus years later I still have all of them in my gun room as a subtle reminder to ask myself "The hell was I thinking?!"