ATI S-BEAM 12GA PUMP | 18.5″ Barrel | ATIGMB3R

The ATI S-Beam is a straightforward 12 gauge pump-action shotgun with an 18.50″ barrel and a synthetic black stock. It includes a receiver-mounted Picatinny rail for optics, a blade front sight, and a 3″ chamber. The design emphasizes simple operation, a compact overall length, and durable materials suited to range use and sporting applications.

Product Specifications

• The manufacturer is AMERICAN TACTICAL, INC..
• The model is listed as the ATI S-BEAM (S-Beam).
• The manufacturer’s part number is ATIGMB3R.
• The gauge is 12 Gauge.
• The chamber size is 3″.
• The action is Pump Action.
• The capacity is 4 + 1.
• The barrel length is 18.50″.
• The barrel is a smooth bore.
• The barrel finish is Black.
• The sights are a blade front.
• The receiver includes an optic Picatinny rail for mounting sights or optics.
• The stock material is synthetic with a black finish.
• The overall length is 39.25″.
• The weight is listed as 8 lbs.
• The UPC is 813393019784.

Compact and straightforward, the ATI S-Beam presents a no-frills platform with an optic-ready rail and a fixed synthetic stock for consistent handling. Its 18.50″ barrel and 3″ chamber make it suitable for range training and clay/sporting target use, offering a practical balance of maneuverability and predictable patterns. Built with common materials and conventional controls, it suits users who prioritize simplicity and accessory flexibility.

Owners have praised the model’s affordability.

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