How Does it Work: Long Recoil

Published on February 7, 2019
Duration: 2:58

This guide explains the long recoil operating system, as demonstrated by Ian McCollum of Forgotten Weapons. It details the sequence of a locked barrel and bolt recoiling together, the barrel returning forward to extract, and the bolt then releasing to chamber a new round. The explanation highlights the system's advantages in safety due to delayed unlocking and disadvantages like mechanical complexity and potential for weaker ejection.

Quick Summary

The long recoil operating system locks the barrel and bolt together, allowing them to recoil as a unit. The barrel then returns forward alone to extract the spent case, after which the bolt is released to chamber a new round. This system enhances safety by ensuring chamber pressure drops before unlocking but can be mechanically complex with weaker ejection.

Chapters

  1. 00:00Long Recoil Cycle Overview
  2. 00:54Application in Handguns
  3. 01:20Advantages and Disadvantages
  4. 02:15Felt Recoil and Historical Context

Frequently Asked Questions

How does the long recoil operating system function?

In a long recoil system, the barrel and bolt lock together and recoil as a unit. The bolt is then held rearward while the barrel returns forward, extracting the spent case. Finally, the bolt is released to chamber a new round. This sequence ensures pressure drops before unlocking.

What are the main advantages of the long recoil system?

The primary advantage is safety, as the extended recoil travel allows chamber pressure to decrease to safe levels before the action unlocks. This delayed unlocking is a key safety feature of the long recoil mechanism.

What are the disadvantages of long recoil firearms?

Disadvantages include increased mechanical complexity due to the need for multiple return springs (barrel and bolt) and often weaker ejection. The combined mass of the recoiling barrel and bolt can also lead to higher felt recoil.

Which firearms use the long recoil operating system?

Classic examples include the Browning Auto-5 shotgun, the Remington Model 11 (a variant of the Auto-5), and the Frommer Stop pistol. These firearms showcase the application of long recoil in both long guns and handguns.

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