ATI Bulldog Bullpup 20 Gauge Semi-Auto 18.5″ 5+1 Tan

About this product

The ATI Bulldog is a 20 gauge semi-automatic bullpup shotgun designed for compact handling without sacrificing basic functionality. It pairs an 18.5″ steel barrel with a fixed tan synthetic bullpup stock and a matte black finish on metal components. The Bulldog includes a single 5-round magazine plus the chambered round (5+1), a three-piece choke tube set, adjustable open sights and modular Picatinny/M-LOK mounting points. Its compact layout and tactical features make it suitable for range use and close-quarters applications where a shortened overall length is beneficial.

Key Specifications

• The gauge is 20 Gauge.
• The action type is Semi-Auto.
• The barrel measures 18.5 inches.
• The listed capacity is 5 + 1.
• The maximum chamber size accepts 3″ shells.
• The stock is a Fixed Bullpup in TAN synthetic material.
• The overall length is 39 inches.
• The listed weight is 10.1.
• The package includes one 5-round magazine.
• The firearm ships with 3 choke tubes and adjustable open sights.

Compact, modular and feature-rich, the ATI Bulldog offers a purposeful bullpup layout with accessory-ready rails, an adjustable cheek rest and an AR-style charging handle. It provides straightforward functionality for shooters who value maneuverability and solid baseline features—suitable for training at the range and configurations that support personal preference and mission-specific setups.