Sawed-Off Shotgun
This site is currently selling the Mad Max shotgun: www.monstersinmotion.com/weapons/index.html
You can also find a replica sawed-off shotgun either through an importer like Fantasia Toys or on e-bay. Fantasia Toys should be able to provide you with a Japanese-made airsoft/b.b. gun made by Hudson Industry Co. of Tokyo. They come in two styles: a ST (standard) version which has a faux wood plastic stock and a DX (deluxe) version which features a wood stock. If you're interested, contact Felix Lu at info@fantasiatoys.com. Note: please be aware of your local laws concerning the use or shipping of replica guns.
A
replica sawed off shotgun
Dave Boboc:
"The gun has some weight to it, almost like a real gun, (to me at least). The barrels are plastic, and the simulated wood pieces (which have a very real looking "grain"). The rest of it is metal. I can't tell if the info that came with the gun says anything about it being a licensed product. There is a brochure that shows other guns they made (very real looking, too), and on the other side of the brochure are some very detailed diagrams of the gun, essentially showing every part it's made of. I think it also illustrates how to disassemble it, also. It does seem pretty close to the original, the only thing I would think it might need is a maybe a thin white piece between the butt of the stock and the black piece that's used to cap off the butt of the stock."
For an expert review, click here.
For those interested in aquiring a real shotgun, or just identifying the Mad Max shotgun, Paul Reasoner recommends Stoeger's coach gun.

Stoeger or IGA Coach Gun
MFP Badges
Inexpensive badges are being offered by Adam Henrickson! Please see his posting on the Bartertown page!
The Japanese MFP Clothing Branch now offers a badge (for about US$230).

MFP Clothing Branch Badge
Empire Kollectables/ Empire Enterprises used to sell the replica badge pictured below, as well a shotgun replica.

For info thanks to Dave Boboc & Peter Barton