Tube extensions

Tube extensions increase your shotgun’s magazine capacity by replacing the factory tube cap with a longer, purpose-built extension. More rounds on board means fewer reloads, smoother stage flow, and better readiness.

Whether you shoot IPSC/3-Gun, run a tactical setup, or simply want extra capacity for training, a quality tube extension is one of the most effective upgrades for a shotgun.

Why install a tube extension?

• Higher capacity for longer stages, home-defense setups, or extended practice sessions.
• Fewer reloads under pressure—maintain rhythm and stay on target instead of topping off constantly.
• Improved front-end balance on some models, helping the gun settle naturally in recoil.
• Reliable feeding when paired with the correct extended spring.

Will a tube extension benefit you?

If you shoot dynamic competitions, train with rapid strings, or prioritize readiness in defensive contexts, extended capacity provides a clear, practical advantage.

How to choose a tube extension

Compatibility with your shotgun

Tube extensions are model-specific. Thread pitch, receiver design, and barrel clamp spacing all vary. Always match the extension to your exact shotgun type and generation (Benelli, Beretta, Mossberg, Remington, CZ, Stoeger, etc.).

Length & added capacity

Extensions typically add +1 to +6 rounds depending on barrel length. Choose the length that aligns flush with—or slightly beyond—your barrel for optimal handling and legal compliance in your discipline.

Material

Aluminum

Pros: lightweight, corrosion-resistant, ideal for competition.
Cons: slightly less impact-resistant than steel.

Steel

Pros: extremely strong and durable, excellent for hard-use or defensive setups.
Cons: adds more weight at the front.

Do you need an extended spring?

Most tube extensions require a longer magazine spring to ensure reliable feeding. Many extensions include one; if not, purchase an appropriate spring for the total tube length.

Optional accessories

• Barrel clamps for added rigidity and protection from impacts.
• QD sling attachments integrated into clamps for tactical setups.
• Follower upgrades to improve visibility and reduce friction.

Installation

Installation is usually straightforward: remove the factory cap, verify or remove any internal magazine plug, install the extension, and fit the extended spring. Check for smooth feeding and proper function before use.

Note: Some shotguns have factory dimples or crimps inside the magazine tube that must be removed for the spring and shells to pass freely. Do this carefully or consult a gunsmith.