How to: Benelli/Turknelli M4 mag tube extension

Published on December 14, 2024
Duration: 4:34

This guide details the process of replacing the factory magazine tube on a Benelli M4 or its clones to increase capacity. It involves disassembling the shotgun, removing a limiting snap ring and limiter, and using a heat gun to break Loctite on the old tube before installing a new, full-length seven-round magazine tube. The process is presented as a straightforward 20-minute job.

Quick Summary

Installing a 7-round magazine tube extension on a Benelli M4 or clone is a straightforward 20-minute DIY gunsmithing task. Key steps include removing the factory snap ring and limiter, using a heat gun to break Loctite on the old tube, and carefully threading in the new extended tube.

Chapters

  1. 00:00Introduction & Problem
  2. 00:34Disassembly: End Cap & Barrel Removal
  3. 00:44Removing the Snap Ring
  4. 01:03Removing the Magazine Tube Limiter
  5. 01:30Removing the Old Magazine Tube
  6. 01:33Using a Heat Gun for Loctite
  7. 02:11Hardest Part: Breaking Loctite
  8. 02:16Installing the New Magazine Tube
  9. 02:32Reinstalling Handguard Retainer
  10. 02:56Reassembly
  11. 04:15Final Result

Frequently Asked Questions

How long does it take to install a Benelli M4 magazine tube extension?

The installation of a Benelli M4 or clone magazine tube extension is presented as an easy job that typically takes around 20 minutes to complete.

What tools are needed to install a Benelli M4 magazine tube extension?

You will need snap ring pliers to remove the factory limiter, a brass rod to push out components, a vise to hold the tube, and a heat gun to loosen Loctite on the old tube.

Do I need to replace the magazine spring when installing an extended tube on a Benelli M4?

No, the original Benelli magazine spring is usually full-length and suitable for use with an extended magazine tube, so a new spring is not required.

What is the main challenge when replacing a Benelli M4 magazine tube?

The most challenging part of the job is often breaking the Loctite that secures the old magazine tube to the receiver, which typically requires the use of a heat gun.

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