The ATI Bulldog is a 20 gauge semi-auto bullpup shotgun (American Tactical part no. ATIG20BDT) built around the same modular, AR-inspired layout as its 12 gauge sibling, in a lighter-recoiling chambering. An 18.5-inch barrel and 5+1 capacity keep the gun short and maneuverable, while Picatinny and MLOK rail space around the fixed tan stock lets you mount lights, optics, and other accessories. Quick-acquisition flip-up sights, a three-piece choke tube set, and an AR-style charging handle round out a shotgun built for tactical users who want less recoil without giving up capability. A Picatinny cutout at the base of the magazine well even lets a spare magazine double as a foregrip.
Key Specifications
- The 18.5-inch barrel keeps pattern performance close to a full-length 20 gauge gun in a much shorter package.
- Capacity is 5+1 rounds, giving a strong payload before reloading.
- Overall length is just 32.65 inches, thanks to the bullpup layout that moves the action behind the grip.
- Front and rear sights are adjustable and flip up for quick target acquisition.
- A manual safety gives a clear, deliberate on/off control.
- The barrel and receiver wear a black finish that contrasts with the tan bullpup furniture.
- A three-piece choke tube set is included so you can tune the pattern to the range.
- Picatinny and MLOK rail space around the fixed stock accepts lights, optics, and other accessories.
- An AR-style charging handle keeps manipulation familiar for shooters coming from modern rifles.
- Ships at approximately 10.1 pounds in its case, per the listed shipping weight.
Frequently Asked Questions
Why choose the 20 gauge over the 12 gauge Bulldog? The 20 gauge chambering gives lighter recoil while keeping the same 18.5-inch barrel and bullpup layout.
Can accessories be mounted on it? Yes, Picatinny and MLOK rail space around the stock accepts lights, optics, and other accessories.
What is the magazine capacity? It holds 5+1 rounds with the included box magazine.
Buy the ATI Bulldog 20 Gauge Bullpup Shotgun
The 20 gauge Bulldog delivers the same compact, modular bullpup platform as its 12 gauge sibling from American Tactical / ATI, with softer recoil for extended range sessions. Picatinny and MLOK rail space, an AR-style charging handle, and flip-up sights keep it capable for tactical training or a truck gun role. Compare it with the rest of our semi-auto shotguns and order from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.
