Tokyo Marui SPAS 12 (Stockless Version) Shooting 3 BBs at a time, the SPAS-12 is your weapon of mass destruction. Each shell holds 30 BBs. This gun has 3 individual chambers and 3 individual inner barrels to pack quite a wallop. Gun holds 1 shell at a time and loads in the belly section just like the real-steel version. Comes with 1 shell. As seen used by Arnold in the movie Terminator. Additional ones sold separately in our accessories section. Be sure to buy more Marui shotgun shells. Gun already comes with one shell. Each shell holds 30 rounds.