Weatherby 18I 12 Gauge 28-inch Semi-Auto Synthetic Black

The Weatherby 18I is a semi-automatic 12 gauge shotgun configured with a 28-inch barrel and a 3-inch chamber. Built on an inertia recoil system with a synthetic stock and a matte finish, the 18I is intended for field use and range work in challenging conditions. Its single-piece billet aluminum receiver and chrome-lined bore are engineered for durability and reliable operation.

Key Specifications

• Model: Weatherby 18I.
• Action: Semi-automatic (inertia recoil system).
• Gauge: 12 gauge.
• Barrel length: 28 inches.
• Chamber: 3-inch.
• Magazine: 4-round internal magazine (4+1 total; 2+1 with magazine limiting plug).
• Stock and finish: Synthetic black stock with matte finish.
• Sights: LPA fiber front sight with full ventilated top rib.
• Receiver: Precision machined single-piece billet aluminum receiver.
• Bore: Chrome-lined bore.

Set up for the Crio Plus choke system and shipped with five choke tubes, the 18I provides adaptability across a range of loads and applications. With an ergonomic, adjustable synthetic stock and a focus on reliable cycling, this model is positioned for shooters who need a rugged, low-maintenance semi-automatic platform for field and target use.