Carlsons 12 Gauge 8-Shot Magazine Extension for Remington 870/1100

Carlsons Magazine Extension is a threaded magazine tube designed for select Remington 12-gauge shotguns. Constructed from blued solid steel, it increases magazine capacity to eight rounds and replaces the factory magazine cap. The extension ships with a spring, base clamp, and a high-visibility follower to simplify installation and operation.

Key Specifications

• The magazine capacity is 8 rounds.
• The gauge is 12 Gauge.
• The tube is constructed from blued solid steel.
• The finish is blued.
• Designed to fit select Remington models including Remington 870/1100/11-87/Versa Max/V3.
• Includes spring, base clamp, and high-visibility follower.
• The threaded tube replaces the factory magazine cap.
• Shipping/packaged weight reported as 0.7 (unit not specified in source data).
• Product model is listed as Magazine Extension.

Built for durability and straightforward installation, this Carlson’s magazine extension offers a practical way to increase usable capacity for sport shooting and range use. Its solid-steel construction and supplied hardware make it a reliable, no-nonsense upgrade for compatible Remington platforms.