AK 47 vs PWS Mark 111 Long Stroke Piston Explained

Published on July 14, 2025
Duration: 0:43

This video explains the long stroke piston system used in AK-47s and the PWS Mark 111 AR-15 pistol. It highlights the AK-47's renowned reliability due to its long stroke design, while noting the PWS Mark 111 offers comparable performance. However, a disadvantage of long stroke systems is increased recoil and potential accuracy differences compared to short stroke systems.

Quick Summary

The AK-47's long stroke piston system is a key factor in its exceptional reliability. While the PWS Mark 111 also uses this system, offering comparable performance, a disadvantage of long stroke designs is increased recoil and potential accuracy differences compared to short stroke systems.

Chapters

  1. 00:00AK-47 Long Stroke Piston Reliability
  2. 00:11PWS Mark 111 Long Stroke AR Explained
  3. 00:23Advantages of PWS Long Stroke System
  4. 00:30Disadvantages: Recoil & Accuracy

Frequently Asked Questions

What is a long stroke piston system in firearms?

A long stroke piston system is a firearm operating mechanism where the piston rod is directly connected to the bolt carrier. This setup causes the piston to travel a significant distance with the bolt carrier, contributing to robust operation and reliability, as seen in the AK-47 platform.

How does the AK-47's long stroke piston system contribute to its reliability?

The AK-47's long stroke piston system is renowned for its reliability because the long, heavy reciprocating mass of the piston and bolt carrier group helps to drive the action through fouling and debris. This robust design is a key factor in its legendary dependability.

What are the potential disadvantages of a long stroke piston system?

A primary disadvantage of long stroke piston systems is increased felt recoil due to the momentum of the long, reciprocating mass. Additionally, these systems can sometimes exhibit differences in accuracy compared to shorter stroke or direct impingement systems.

Is the PWS Mark 111 a reliable firearm?

The PWS Mark 111 utilizes a long stroke piston system, similar to the AK-47, which is generally associated with high reliability. While specific performance can vary, the design principle of the long stroke piston is known for its robust operation.

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