Battle of the Submachine Guns Pt.3: Thompson vs. Grease Gun vs. KRISS Vector

Published on December 5, 2014
Duration: 4:08

This video provides an expert-level comparison of three iconic submachine guns: the Thompson M1A1, M3 Grease Gun, and KRISS Vector, through a structured 20-meter, 8-second drill. Instruction is provided by Larry Vickers, a former Delta Force operator, highlighting the distinct handling characteristics, cyclic rates, and controllability of each platform. The drill effectively demonstrates the practical application and performance differences between these historical and modern firearms.

Quick Summary

Larry Vickers, a former Delta Force operator, compares the Thompson M1A1, M3 Grease Gun, and KRISS Vector in a timed 20-meter drill. He highlights how cyclic rates (Thompson 600-700 RPM, M3 450 RPM, KRISS 1200 RPM) and features like the KRISS's two-round burst impact controllability and accuracy.

Chapters

  1. 00:00Thompson M1A1 Drill Setup
  2. 01:25M3 Grease Gun Drill Performance
  3. 02:33KRISS Vector Drill Analysis

Frequently Asked Questions

How does the cyclic rate affect submachine gun control?

A higher cyclic rate, like the KRISS Vector's 1200 RPM, fires rounds faster but can increase muzzle rise. Lower rates, such as the M3 Grease Gun's 450 RPM, offer more control and tighter shot groups, making them easier to manage during rapid fire.

What is the key difference in controlling burst fire between these SMGs?

The Thompson M1A1 struggles with burst control due to its cyclic rate, often causing the third shot to climb. The KRISS Vector excels with a dedicated two-round burst, providing distinct, controllable impacts, while the M3 Grease Gun's slower rate inherently aids control.

What drill was used to compare the Thompson, Grease Gun, and KRISS Vector?

A 20-meter, 8-second drill using 20 rounds was employed. This timed exercise effectively highlighted the controllability, accuracy, and practical performance differences between the three submachine guns under pressure.

Who is the instructor providing analysis in this video?

The analysis and instruction are provided by Larry Vickers, a former Delta Force operator with extensive experience in firearms instruction and tactical applications, lending high authority to the content.

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