Shooting the M3A1 Grease Gun

Published on March 9, 2018
Duration: 6:28

This guide details the technique for shooting the M3A1 Grease Gun, as demonstrated by Ian McCollum of Forgotten Weapons. It covers cocking the weapon using the thumb hole, loading the .45 ACP magazine, and understanding its low rate of fire for controllability. The guide also touches upon the unique dust cover safety mechanism and handling characteristics.

Quick Summary

The M3A1 Grease Gun fires .45 ACP with a 30-round magazine and has a controllable rate of fire around 450 RPM. It's cocked via a thumb hole in the bolt, and its safety is integrated into the dust cover. Constructed from stamped sheet metal, it was designed as an economical alternative to the Thompson submachine gun.

Chapters

  1. 00:00Introduction to the M3A1 Grease Gun
  2. 00:46Design Philosophy and History
  3. 01:46Magazine and Loading Features
  4. 02:21Shooting and Rate of Fire
  5. 02:52Safety Mechanism and Sights
  6. 04:25Recoil and Handling Characteristics

Frequently Asked Questions

How is the M3A1 Grease Gun cocked?

The M3A1 Grease Gun is cocked using a thumb hole located in the bolt. This design replaced the side charging handle found on the earlier M3 model, simplifying operation.

What caliber and magazine capacity does the M3A1 Grease Gun use?

The M3A1 Grease Gun fires the .45 ACP cartridge and typically uses a 30-round stick magazine. The magazine design is a double-stack, single-feed type.

What is the rate of fire for the M3A1 Grease Gun?

The M3A1 Grease Gun has a relatively low rate of fire, approximately 450 rounds per minute. This slower 'chugging' pace makes the weapon exceptionally controllable during automatic fire.

What is the safety mechanism on the M3A1 Grease Gun?

The M3A1 Grease Gun features a safety integrated into the dust cover. When the dust cover is closed, a tab engages the bolt, preventing it from moving and rendering the firearm safe.

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