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IA Iron River Armory

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

SKUTSW|161766 Conditionnew CategorySemi Auto Shotguns
$330.43
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Specs at a glance

ATI Bulldog Bullpup 20 Gaug… SPECS AT A GLANCE 18.5 inches SIZE
Editorial diagram — measurements verified during testing.

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.

Sources & methodology. Editorial review and rating by Travis Caldwell based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication.
$330.43