The RN-45!

Published on February 5, 2024
Duration: 12:57

This guide details the disassembly and internal analysis of the custom-built RN-45 firearm by Royal Nonesuch, as presented by professional firearm designer Mark Serbu. It covers component identification, internal mechanism critique, and diagnostic insights derived from high-speed footage, highlighting the firearm's unique construction and operational characteristics.

Quick Summary

The RN-45 is a custom-built firearm by Royal Nonesuch, integrating parts from Sten Mk III, M3 Grease Gun, and AK-47 platforms. Chambered in .45 ACP, it operates open-bolt, full-auto only at ~465 RPM. Critiques include a lack of bolt stop and oversized ejector. High-speed analysis revealed feeding issues and light strikes.

Chapters

  1. 00:00Introduction to RN-45
  2. 00:39External Components Overview
  3. 02:18Disassembly and Internals
  4. 04:55Mechanical Analysis
  5. 09:13Live Fire Demonstration
  6. 09:40High-Speed Diagnostics
  7. 11:26Conclusion and Specs

Frequently Asked Questions

What are the key components used in the custom RN-45 firearm?

The RN-45 is a custom build incorporating a Sten Mark III receiver, an M3 Grease Gun bolt, and an AK-style side-folding stock, pistol grip, and trigger group. It also uses an Uzi barrel nut and Glock-style .45 ACP magazines.

What are the main criticisms of the RN-45's internal design?

Mark Serbu critiques the RN-45 for lacking a bolt stop and having an oversized ejector. The trigger and hammer were modified from an AK system to act as a sear for its open-bolt configuration.

What issues were identified during high-speed analysis of the RN-45?

High-speed footage revealed feeding problems where cartridges bounced in the chamber, slowing the bolt and causing occasional light strikes or misfires, indicating reliability concerns.

What is the operational status and caliber of the RN-45?

The RN-45 operates as an open bolt, full-auto only firearm chambered in .45 ACP, with a confirmed rate of fire of approximately 465 rounds per minute.

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