American Tactical Bull-Dog 12 Gauge Bullpup Semi-Auto Shotgun – 18.5" Barrel, 5+1, Matte Black
The ATI Bull-Dog is a compact, gas-operated bullpup shotgun that fits a full 18.5" threaded barrel and 5-round detachable magazine into a non-NFA 26" overall length. Its AR-15-style ambidextrous charging handle, generous M-LOK/Picatinny mounting surfaces, and adjustable cheek riser give it modern ergonomics and customization potential right out of the box.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Specific Condition Notes: Shows only minimal handling marks, and the bore remains bright and clean throughout.
What’s Included
- One 5-round detachable steel magazine with polymer floorplate incorporating a Picatinny cut-out
The Bull-Dog’s bullpup layout places the action behind the trigger, allowing the 18.5" barrel to remain legal length while keeping overall length to just 26". This makes the shotgun noticeably handier for tight quarters or vehicle storage without sacrificing ballistic performance.
Controls are intuitive: a push-button magazine release, cross-bolt safety, and an AR-15 style T-handle charging handle that is ambidextrous—features rarely found together on bullpup shotguns. The 16.5" length of pull and adjustable cheek riser help shooters of different statures achieve a solid, repeatable stock weld.
The polymer handguard offers M-LOK slots on both sides and the bottom for lights, slings, or vertical grips, while a full-length Picatinny rail up top accepts optics or the included flip-up iron sights. The threaded muzzle lets users install chokes or compatible muzzle devices to fine-tune pattern or recoil behavior.
Constructed with a lightweight polymer frame and anodized aluminum receiver, the Bull-Dog keeps weight centered toward the shoulder, reducing perceived muzzle heaviness. Manufactured by PARS in Konya, Turkey and imported by American Tactical, the design debuted in 2020 and quickly gained attention for bringing AR-style handling cues to the 12-gauge bullpup format.