Trench Sweeper Project

Published on November 2, 2025
Duration: 0:54

This guide details the modification of an Ithaca Model 37 shotgun into a trench gun configuration, inspired by WWI-era firearms. The process involves a barrel chop to a legal 19-inch length and the installation of a heat shield. The narrator, acting as a hobbyist gunsmith, highlights the DIY aspect and the historical context of the firearm.

Quick Summary

The Ithaca Model 37 can be modified into a trench gun by cutting the barrel to a legal 19-inch length and adding a heat shield, costing around $520. Its historical significance stems from WWI use, and its unique slam fire capability allows for rapid firing by holding the trigger while pumping.

Chapters

  1. 00:00Introduction to Ithaca Model 37 Slam Fire
  2. 00:12Trench Gun Modification Process
  3. 00:27Legal Compliance and Build Reveal
  4. 00:37Project Cost Breakdown
  5. 00:41Live Fire Demonstration

Frequently Asked Questions

What is the historical significance of the Ithaca Model 37 trench gun?

The Ithaca Model 37, particularly in its trench gun configuration, gained notoriety during WWI for its effectiveness. Its rapid firing capability led to historical claims by German forces of it being a 'war crime' due to its devastating impact on enemy soldiers.

How can an Ithaca Model 37 be modified into a trench gun?

The modification involves cutting the barrel to a legal length (19 inches in this case) and installing a heat shield. This process, performed by the narrator, took about 30 minutes and cost $520 in total for the shotgun and accessories.

What is the slam fire capability of the Ithaca Model 37?

The Ithaca Model 37 is known for its ability to 'slam fire.' This means the shotgun can be fired repeatedly by holding the trigger down while cycling the pump action, allowing for very rapid successive shots.

What are the legal considerations for modifying a shotgun barrel?

Federal law requires shotguns to have a minimum barrel length of 18 inches. Modifying a barrel to less than 18 inches classifies it as a Short-Barreled Shotgun (SBS), which is heavily regulated and requires a tax stamp and ATF approval.

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