The more compact Tokyo Marui SAIGA-12 SBS gas blowback shotgun is available at OPS-Store and here is what they say about it. This is equipped with a gas blowback system featuring a large 19mm piston for a realistic shooting experience. The auto-stop system, which can be deactivated on the magazine, ensures reliable performance. Additional features include an adjustable front sight, a temperature measurement system, a foldable AR15-type stock, an A2-type pistol grip, a 23mm CW screw thread for accessories, Picatinny rails for customization, and a long 90-round magazine.