The Alpharms Inertia 1 HD in 12 gauge (brand part no. 01SA1218S) is a semi-automatic shotgun built around an 18.5-inch barrel with a 3-inch chamber, using an inertia-driven operating system for reliable cycling. TR Imports equips the Inertia 1 HD with a pistol grip stock and a 5-round magazine tube. Among semi-auto shotguns in the semi-auto shotguns category, the Inertia 1 HD favors shooters who want a compact, pistol-gripped defensive 12 gauge.

Key Specifications

• Chambered in 12 gauge with a 3-inch chamber.
• Operates on an inertia-driven system.
• Features an 18.5-inch barrel.
• Feeds from a 5-round magazine tube.
• Built with a pistol grip stock.
• Ships at approximately 9.05 pounds.

Frequently Asked Questions

How does the Inertia 1 HD cycle? Through an inertia-driven operating system.

What is the magazine capacity? A 5-round magazine tube.

Buy the Alpharms Inertia 1 HD 12 Gauge

A compact, pistol-gripped defensive 12 gauge is exactly what the Inertia 1 HD delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.