Carlson's 8-Shot Magazine Extension Assembly for 12 Gauge Beretta A-300 Extreme, A-400 Extreme, TX4 Storm

Increase your 12 gauge shotgun capacity and maintain reliable feeding with Carlson's 8-Shot Magazine Extension Assembly, designed specifically for Beretta A-300 Extreme, A-400 Extreme, and TX4 Storm models. Engineered for hunters, competitive shooters, and upland enthusiasts, this extension provides a durable, precision fit that enhances performance while maintaining balance and handling.

Product Description

Carlson's 8-Shot Magazine Extension Assembly allows shooters to add additional rounds to their Beretta 12 gauge shotgun magazine, bringing extended capacity for field use, competition, or extended shooting sessions. Constructed with CNC-machined aluminum, stainless steel spring and follower, and a corrosion-resistant finish, this assembly ensures long-lasting durability and smooth, reliable feeding. The kit includes all necessary components and installation instructions for easy bolt-on assembly.

Key Features & Benefits

• Increased Capacity — Adds extra rounds to your Beretta 12 gauge magazine for longer sessions without reloading.

• Beretta-Specific Design — Compatible with A-300 Extreme, A-400 Extreme, and TX4 Storm models, ensuring perfect fit and function.

• Precision Machining — CNC-machined aluminum body and stainless steel internals provide tight, reliable construction.

• Reliable Feeding — Optimized spring and follower reduce jams and ensure smooth cycling with 2¾" and 3" shells.

• Corrosion-Resistant Finish — Hard-coat anodized exterior withstands weather and repeated use.

• Tool-Free End Cap — Easy installation and maintenance with included end cap and wrench.

• Lightweight & Balanced — Minimal added weight maintains shotgun handling and balance.

• Complete Kit — Includes extension tube, spring, follower, end cap, installation wrench, and step-by-step instructions.

Specifications

Brand: Carlson’s
Model: 8-Shot Magazine Extension Assembly (12 Gauge)
Compatibility: Beretta A-300 Extreme, A-400 Extreme, TX4 Storm
Materials: CNC-machined aluminum, stainless steel spring and follower, anodized finish
Capacity Increase: Adds up to 2 extra rounds (final capacity depends on shell length and choke configuration)
Shell Length Support: 2¾" and 3"
Dimensions: Extension length 3.0"–3.5", outer diameter matched to Beretta magazine tube
Weight: Approximately 4–6 oz
Included Components: Extension tube, spring, follower, end cap, installation wrench, instructions
Warranty: 1-year limited manufacturer warranty

Why Choose Carlson's 8-Shot Magazine Extension

• Field-Proven Reliability — Engineered for consistent feeding in hunting, competition, and tactical scenarios.

• Manufacturer Quality — Precision fit and durable finish from Carlson’s ensure long-lasting performance.

• Quick Installation — Designed for straightforward assembly on Beretta magazine tubes with common tools.

• Maintains Handling — Minimal weight preserves balance and pointability for fast, accurate shots.

Usage & Installation Instructions

1. Ensure your Beretta shotgun model is compatible (A-300 Extreme, A-400 Extreme, TX4 Storm).

2. Unload the firearm and follow all safety procedures; remove the magazine spring and follower according to the shotgun manual.

3. Thread Carlson’s extension onto the magazine tube following the included instructions; install spring, follower, and end cap.

4. Test with dummy rounds or snap caps to confirm smooth feeding and correct function before live use.

5. Recheck tightness after the first range session and periodically thereafter. Confirm function with 3" shells per manufacturer guidance.

Carlson’s 8-Shot Magazine Extension Assembly provides increased 12 gauge capacity and reliable performance for Beretta A-300 Extreme, A-400 Extreme, and TX4 Storm shotguns, making it an essential upgrade for hunting, competition, and extended shooting sessions.