Nail gun to firearm conversions - China

P.A Luty homemade submachine gun designs test fired

Expedient Homemade Firearms Vol II 'The machine pistol MK2' design test fired by Australian police.

Revolving shotguns - China

 Note the improvised cartridge method produced via cuts + flaring out.

Various single-shot pistols & shotguns - Brazil

.. and last and least, the chair-leg (or mop handle?) spectacular:

Glock style self-loading pistol

The lower receiver of this talented home gunsmith's piece of art is suspected to be molded from sawdust mixed with epoxy to form a crude composite. Rather than having a spring loaded pin, it utilizes a small concealed hammer.

More Luty influenced SMGs - Australia

 Homemade revolver also seized:

Self-loading pistols - China

Illicitly manufactured self-loading pistols make up a large portion of illegal firearms seized in Mainland China. 

Airsoft pistols utilized for zip-gun construction (China)

Apparently a few local cows met their demise to these crude contraptions. Each are single shot weapons powered by homemade ammunition made by combining nail-gun cartridges with a metal projectile. The adaption likely entails fitting an improvised striker face to the spring loaded piston and using metal tubing sleeved into the original barrel.

'T' SMG / Brazil / No.4

Characteristics:
 
- Large bulky receiver.
- Barrel appears to be centered within upper receiver.
- Safety lever and side mounted ejector visible.

Electrigrip Special

The latest innovation in tactical firearm furniture being employed by Brazil's crafty John Brownings...

Danish resistance 'Baby Gun' machine pistol

Folded sheet metal machine pistol - Brazil

Compact box section machine pistol - Brazil

Luty Vol.1 influenced SMG - Australia

Homemade submachine gun - Australia

Australian man charged after allegedly manufacturing firearms for criminal group

Black market MAC-10 style copies - Brazil

Machine pistol seized in Brazil

Scratch built square section machine pistols (Brazil)

Submachine guns seized from Loyalist arms factory

Scratch-built submachine guns, the model of which can be seen here, seized from a clandestine factory in Co. Down, Northern Ireland. The individual running this operation had been manufacturing these types of weapons for nearly 20 years for loyalist paramilitary groups before being caught. The extremely simple design of these weapons shows the futility of attempting to stamp out the black market in illegal firearms.

Part of a collection of photographs documented here.

Machine pistols from Ecuador

.22lr pen gun

Another well crafted pen gun with it's simplistic internals displayed.

Improvised 8 shot pepperbox

Our trusty friend the staple gun returns yet again in the form of a tactical laser-sighted 8 shot .38 spl revolver.

MAC-esque SMG - Brazil

Bolt action pistol with suppressor