M11/9 Submachine Gun CF-W Bolt (Full Auto Testing)

Published on January 20, 2017
Duration: 12:40

This guide details the installation of the CF-W Bolt for the M11/9 submachine gun, a modification designed to significantly reduce the rate of fire. The increased mass of the tungsten alloy bolt, compared to the OEM version, allows for slower cycling and improved controllability during full-auto fire. The guide also touches upon the 'paperclip mod' for adjusting recoil springs. Instruction is provided by subject matter experts with high authority in NFA firearms.

Quick Summary

The CF-W Bolt for the M11/9 submachine gun, constructed from tungsten alloy, significantly reduces the rate of fire from ~1400 RPM to 550-750 RPM due to its increased mass (32.25 oz vs. 15.30 oz OEM). This enhances controllability during full-auto fire and minimizes recoil and firearm wear by preventing bolt-to-receiver impact.

Chapters

  1. 00:00Introduction to the CF-W Bolt
  2. 00:41Technical Overview and Weight Comparison
  3. 01:45Design Features and Recoil Management
  4. 03:00The Paperclip Mod
  5. 06:51Live Fire Testing and Controllability

Frequently Asked Questions

What is the primary benefit of the CF-W Bolt for the M11/9?

The primary benefit of the CF-W Bolt for the M11/9 is its ability to significantly reduce the firearm's rate of fire. Made from a dense tungsten alloy, its increased mass slows down the cycling speed, making full-auto fire much more controllable and accurate.

How does the CF-W Bolt reduce the rate of fire in an M11/9?

The CF-W Bolt reduces the rate of fire by increasing the mass of the bolt assembly. This heavier component requires more energy to cycle, slowing down the overall rate of fire from approximately 1400 RPM with the OEM bolt to between 550-750 RPM.

What is the 'paperclip mod' mentioned in relation to the CF-W Bolt?

The 'paperclip mod' refers to a modification that allows for easier changing of recoil springs on the M11/9, often used in conjunction with the CF-W Bolt. It utilizes a paperclip to facilitate the removal and installation of springs, enabling quick adjustments to the rate of fire without traditional roll pins.

How does the CF-W Bolt affect recoil and firearm wear?

The CF-W Bolt's increased weight and design prevent it from impacting the rear of the receiver during cycling. This reduces perceived recoil and minimizes potential damage or wear to the firearm's internal components.

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