This is my Franchi SPAS 12 (SPAS= Special Purpose Assault Shotgun)
It is a pump action shotgun with a 7 cartridge (i.e. 1x4 lego piece) under-barrel magasine. the cartridges are inserted in a hole in front of the trigger guard. see the pic for more details.
this is the folded stock
this is a very basic explination of how the magasine and loading mechanism works
this is the pump in normal and back positions
The gun has a folding stock, just like the real thing. it has a clip on the top of the barrel for holding it folded, anf another clip that automatically locks it when you unfold it.
It has a range of about 7.5 metres if fired from (my) shoulder height (about 1.5m), with the gun level, so it obviously could fire further.
The pump can occasionally be quite stiff to pull back, as you are pulling back two very strong rubber bands at a rate of 2:1, and the mechanism jams about once every 15 shots, but all in all, i think it is great.
awesome!! for a really long time ive been trying to make a working spas 12 model but never succesed. do you think you could fix instructions? like if you still have it built you could tare it apart and take pictures all the time and then display it backwards? you could buil it up with your own instructions again! its totally your choice though.