Netflix has an outstanding documentary called Underword Inc. Episode 1 is entitled Ghost Guns. It’s a fascinating documentary about how pistols are counterfeited in the jungles of the Philipeans for $250 by hand using hacksaws and files with scrap metals. They make replicas of the Colt 1911 .45 that are then sold. These are then given fake serial numbers and a bluing finish and the level of craftsmanship is amazing!! You would never know it was a fake. Perhaps no rifling.
These are then smuggled into the ISA on container ships and sold to gangs for $800 as they are untraceable. Fake SN and no ballastic match. Use them to kill a few times and their value goes down because the ballistics can be tied to the weapon, o they are smuggled back out and sold in war zones or drug cartels for $800 again where their history doesn’t matter. Counterfeits are fascinating. Best documentary I ever saw.
And there’s the example of an AK47 made from a shovel.
For several years I had full use of nearly a half million dollars of machine shop. CNC mill, lathe, metal breaks, water jet cutter, MIG,TIG, etc. When people would talk about banning guns I would show them a picture of my shop and then a picture of a Sten gun.
The revolver pictured is at least 7 or 8 shot, not six. Just count the chambers in the cylinder.
One could also make an airgun almost as powerful as a pistol
It appears the cartridge cases, possibly of aluminum, were improvised from the individual cells found inside the common 9-volt transistor radio battery. They are also sometimes used as the body for homemade blasting caps, as used on reloaded hand grenade fuzes.