AK-50 UPDATE - February 2021

Published on February 23, 2021
Duration: 12:26

This guide details the process of fitting and demonstrating the bolt carrier and front trunnion for the AK-50 project, based on Brandon Herrera's February 2021 update. It covers the redesigned trunnion geometry, the modular bolt carrier cam groove inspired by the Stribog, and the functional demonstration using a 3D-printed bolt mock-up. The information is presented from the perspective of the lead designer, offering high-level technical insights into the project's development.

Quick Summary

Brandon Herrera's AK-50 update details significant design revisions, including a redesigned front trunnion with improved geometry and a threaded barrel hole. The bolt carrier now features a modular cam groove inspired by the Stribog for easier prototyping, and the project is adopting a single-spring recoil system with a rear booster. Oversized PKM-style rivets are also being implemented.

Chapters

  1. 00:00Introduction and Project Status
  2. 01:44Front Trunnion Redesign
  3. 04:49Bolt Carrier and Cam Groove
  4. 06:16Recoil System and Rear Trunnion
  5. 08:18Bolt Mock-up and Functionality
  6. 09:39Future Plans and Riveting

Frequently Asked Questions

What are the key design changes in the AK-50's front trunnion?

The AK-50's front trunnion has been redesigned with modified top geometry to prevent bolt carrier interference. It also features a threaded barrel hole for headspacing and deeper rivet chamfers to accommodate a thicker stamped receiver.

How does the AK-50's bolt carrier differ from previous designs?

The new AK-50 bolt carrier includes an updated ejector cut and a modular cam groove inspired by the Stribog. This modularity allows for easier prototyping of different cam paths without needing to machine entirely new carriers.

What recoil system is being used in the AK-50 prototype V2/V3 components?

The AK-50 project is moving to a single-spring recoil system to save space and prevent binding. A rear trunnion with a booster spring is included to manage high-pressure loads or suppressed fire.

What type of rivets are being used for the AK-50 build?

Brandon Herrera plans to use oversized PKM-style rivets for the AK-50 build. This choice is part of accommodating the thicker stamped receiver design.

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