How to Identify a Real M1A1 Carbine vs a Fake

Published on February 10, 2018
Duration: 10:54

This video provides a detailed guide to identifying genuine M1A1 Carbine folding stocks from reproductions. Key authentication points include specific 'Circle P' and 'RIA EB' proof marks, the 'B257614' drawing number cast into the buttplate, and 'OI' markings on original walnut stocks. The receiver must also be marked 'INLAND DIV.' to be considered authentic.

Quick Summary

To authenticate an M1A1 Carbine, check the stock for a 'Circle P' proof mark and the buttplate for the cast drawing number 'B257614'. The receiver must be marked 'INLAND DIV.', and original stocks are made of walnut, often showing 'OI' markings internally.

Chapters

  1. 00:00Intro: M1A1 Carbine Overview
  2. 00:49M1A1 Adoption & Inland Manufacturing
  3. 02:30The Problem of Fake M1A1 Carbines
  4. 04:08Authentic Stock Markings: Circle P, RIA EB
  5. 05:13Assessing Wear and Hardware Details
  6. 06:46Buttplate Drawing Number: B257614
  7. 08:07Internal Markings & Wood Type (Walnut vs Beech)
  8. 09:14Receiver Verification: INLAND DIV.

Frequently Asked Questions

What are the key markings to look for on an authentic M1A1 Carbine stock?

Authentic M1A1 Carbine stocks should feature a 'Circle P' proof mark and potentially 'RIA EB' stamps from Rock Island Arsenal refurbishment. Original pistol grips may also have crossed cannons ordnance marks and manufacturer codes like 'OI' (Overton Inland).

How can I verify the buttplate on an M1A1 Carbine stock?

A critical authentication point is the drawing number cast into the inside of the buttplate, which should be 'B257614'. Most fakes lack this number, stamp it instead of casting it, or have it too clearly legible compared to faint originals.

What receiver markings indicate a genuine M1A1 Carbine?

The receiver of a genuine M1A1 Carbine must be marked 'INLAND DIV.'. If an M1A1 is found on a receiver manufactured by another company, such as Winchester or Rock-Ola, it is considered a 'put-together' fake.

What type of wood should an original M1A1 Carbine stock be made from?

Original M1A1 Carbine stocks are made of walnut. If the stock is disassembled, an authentic one will have 'OI' (Overton Inland) marked in the wood channel. Reproductions often use different woods like beech, which is a significant red flag.

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