The TR Imports Alpharms Inertia 1 in 12 gauge (brand part no. 01SA1228S) is a semi-automatic shotgun built around a 28-inch barrel with a 3-inch chamber, using an inertia-driven operating system for dependable cycling. TR Imports drills the barrel from 4140 steel and pairs it with a black polymer stock, a manual safety, and a rotative locking cap. Among semi-auto shotguns in the semi-auto shotguns category, this longer-barreled Inertia 1 favors shooters who want a full-length field autoloader.

Key Specifications

• Chambered in 12 gauge with a 3-inch chamber.
• Operates on an inertia-driven system.
• Features a 28-inch barrel drilled from 4140 steel.
• Feeds from a magazine with a 4-round capacity.
• Equipped with a manual safety.
• Uses a rotative locking cap to secure the magazine tube.
• Accepts Mobil-pattern choke tubes.
• Built with a black polymer stock.

Frequently Asked Questions

What choke system does it use? Mobil-pattern interchangeable chokes.

What is the barrel made of? Drilled 4140 steel.

Buy the Alpharms Inertia 1 12 Gauge 28-inch

A full-length field autoloader with inertia-driven reliability is exactly what this Inertia 1 delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.