Oooh!
One of the last items I was temped at buying when I was last in Japan. Damnit how I wish I would have.
Worthy of it's own picture.
The Tanaka M870. A fun time in a can! Gas operated of course (each shell contains it's own gas reservoire) and holes 6 bb's) Pump operated (so get yourself a shell catcher). Certainly something I'd carry around... or consider mounting to my PSG-1.
Of course, let's not forget the TOP 1000-round drum magazine's for the M16 ($48 CDN), MP5 ($48CDN) and AK series (also $48 CDN)