No stock option and drum magazine underbarrel shotgun. further, the actual masterkey shotgun is modified at the back of the receiver to mount more closely to the fron tof the m16 mag mag well, its a dedicated setup.22 LR Black Polymer 110/rd 56x45mm NATO 30rd Magazine 16 Instead of a $200 NFA short barrel shotgun tax-stamp, the AOW tax stamp costs $5. A latch release allows the operator to extract the spent shell and reload a new shell. Tokyo Marui 3000 Round Drum Magazine for TM Sledgehammer Airsoft AEG Shotgun + Cart. is the right gun at the right price! Comes with 2-5 round magazines and 3-choke tubes. A Thompson is just not a Thompson without the most famous accessory item ever - the Drum Magazine. 5mm underbarrel shotgun for which a variety of rounds are available. Ships with 2 -5 round magazines and 3 chokes. Developed in 1972 by Maxwell Atchisson, it has been continuously improved upon, up to the 2005 model, which is the current model of the AA-12. 99 In Stock Brand: Smith And Wesson Item Number: # 10120 Winchester Ammunition 40 S&W 180 Grain FMJ - Case, 500 Rounds $279. Pistol Drum Magazine for P08 pistol Extended Barrel C96 pistol Shoulder Stock C96 pistol. A shotgun with a shoulder stock and a barrel with a length less than 18″ is an SBS.