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IA Iron River Armory

Alpharms Inertia 1 HD 12ga 18.5in Pistol Grip 5rnd

SKUCSSI|TF01SA1218S Conditionnew CategorySemi Auto Shotguns
$332.08
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About this product

The TR Imports Alpharms Inertia 1 HD is presented as a compact, pistol-grip shotgun configuration built around an 18.5-inch barrel and a 3-inch chamber. The package lists a 5-round magazine tube and is categorized under semi-auto shotguns. This design is positioned for close-quarters roles where a shorter overall length and a pistol grip are preferred. Specifications provided are taken directly from the supplied product data without additional inference.

Key Specifications

  • The manufacturer is TR Imports.
  • The model is Alpharms Inertia 1 HD.
  • The caliber is listed as 12ga.
  • The chamber accepts 3in shells.
  • The barrel measures 18.5 inches.
  • The firearm features a pistol grip configuration.
  • The tubular magazine is listed as 5rnd.
  • The listed weight is 9.05.
  • Classified under Semi Auto Shotguns.

Compact and straightforward, the Alpharms Inertia 1 HD combines short-barrel handling with a pistol-grip layout and a 5-round magazine tube for a slim, maneuverable profile. Its configuration suits users seeking a concise platform for close-quarters or home-focused roles while retaining the handling characteristics of a semi-auto shotgun. The package emphasizes a no-nonsense, utilitarian approach to performance and ergonomics.

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Specs at a glance

Alpharms Inertia 1 HD 12ga … SPECS AT A GLANCE 3in SIZE
Editorial diagram — measurements verified during testing.
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.
$332.08