Carlsons Magazine Extension Tube 12 Gauge, 8-Shot

This Carlson's magazine extension tube increases magazine capacity for select 12 gauge shotguns. Constructed of blued steel, the extension replaces the factory magazine cap and is supplied with a spring, base clamp with swivel stud, and a high-visibility follower. The threaded design installs in place of the standard cap to provide an 8-shot magazine capacity where compatible.

Key Specifications

• The caliber is 12 Gauge.
• The tube provides a magazine capacity of 8 shots as stated by the manufacturer.
• The material is steel with a blued finish.
• The package includes spring, base clamp with swivel stud, and a high-visibility follower.
• The design is a threaded tube intended to replace the factory magazine cap.
• Listed product dimensions include 2.30 x 4.70 x 12.15 (source values provided).
• The listing weight is 0.75 (unit not specified in source data).
• Manufacturer notes does not permit direct shipping to California per source listing.

Built for reliability and straightforward installation, this extension tube is suited to competition and sporting uses where increased magazine capacity is authorized and appropriate. Durable blued steel construction and the included hardware make it a practical option for users seeking a factory-replacing magazine cap solution for compatible 12 gauge shotguns.