12 Gauge AR-10 Conversion from Genesis Arms

Published on May 20, 2020
Duration: 12:19

This guide details the process of converting an AR-10 lower receiver to accept a Genesis Arms Gen 12 12-gauge upper receiver. The conversion involves replacing specific springs and pins in the lower receiver to handle the increased recoil and ensure reliable operation. The process also includes an optional bolt catch replacement to guarantee compatibility between the 12-gauge upper and a standard .308 upper.

Quick Summary

The Genesis Arms Gen 12 is a 12-gauge upper receiver that converts an AR-10 lower into a magazine-fed shotgun. It uses a short recoil system for reliability with various 12-gauge loads and avoids gas system fouling. A conversion kit with upgraded pins and springs ensures proper function.

Chapters

  1. 00:00Introduction: AR-10 vs. 12 Gauge Versatility
  2. 00:44Genesis Arms Gen 12 Introduction
  3. 01:33Why a Modular Upper Receiver?
  4. 01:41Development History & Objectives
  5. 02:14Magazine Design Challenges
  6. 02:1712 Gauge Ammunition Variability
  7. 03:11The Conversion Kit Explained
  8. 03:43Short Recoil Operating System
  9. 04:00Advantages of Non-Gas Operation
  10. 04:45Patented Technology
  11. 05:06Beef Up Kit Components
  12. 05:08Anti-Walk Pins
  13. 05:34Recoil Springs
  14. 06:04Magazine Bar & Bolt Catch
  15. 07:24AR-10 Standardization Challenges
  16. 07:56Utilizing AR Features
  17. 08:40Testing Light Loads
  18. 09:20Worst Case Scenario Test
  19. 10:45Test Results & Conclusion
  20. 10:5010 Round Magazine Update
  21. 11:10Final Thoughts on Gen 12

Frequently Asked Questions

What is the Genesis Arms Gen 12 system?

The Genesis Arms Gen 12 is a 12-gauge upper receiver designed to be compatible with AR-10 (.308 pattern) lower receivers. It allows users to convert their existing AR-10 platform into a magazine-fed shotgun.

How does the Gen 12 upper operate?

The Gen 12 utilizes a short recoil operating system, where the barrel reciprocates. This design avoids gas tubes and pistons, making it more reliable with diverse 12-gauge ammunition and less prone to fouling.

What components are included in the Gen 12 conversion kit?

The conversion kit typically includes anti-walk trigger pins, upgraded magazine button and bolt catch springs, and potentially a modified magazine bar or bolt catch to ensure proper function and compatibility with the AR-10 lower.

Can I use my standard AR-10 lower with the Gen 12 upper?

Yes, the Gen 12 is designed for AR-10 lowers, specifically those compatible with the DPMS pattern. The conversion kit ensures reliable operation and compatibility between the 12-gauge upper and the lower receiver.

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