SMLE MkI***: The Updated Early Lee Enfields (and Irish Examples!)

Published on February 3, 2021
Duration: 7:41

This expert-level analysis by Ian McCollum of Forgotten Weapons delves into the SMLE MkI***, a significant World War I era update of the Short Magazine Lee-Enfield. The video details crucial ammunition changes from Mark 6 to Mark 7, necessitating specific sight modifications and improved sight pictures. It also highlights the prevalence of Irish contract rifles and their unique markings and potential modifications.

Quick Summary

The SMLE MkI*** is an updated Lee-Enfield rifle designed for the faster Mark 7 ammunition. It features an 'HV' stamp, a modified sight base, a U-notch rear sight, and a square front post for improved accuracy. Many examples in the US are Irish contract rifles with unique 'ER' or 'CR' serial prefixes.

Chapters

  1. 00:03Introduction to SMLE MkI***
  2. 00:27Ammunition Change: Mark 6 to Mark 7
  3. 01:05Sight Updates for Mark 7 Ammunition
  4. 01:34Rear Sight Comparison (Mark 6 vs. Mark 7)
  5. 02:14Improved Sight Picture (U-notch vs. V-notch)
  6. 02:45Volley Sight Reconfiguration
  7. 03:10Irish SMLE MkI*** Rifles
  8. 03:54Irish Rifle Markings and Modifications
  9. 04:54Differences in Irish Contracts
  10. 06:33Original Production Markings
  11. 06:55Conclusion: Understanding SMLE History

Frequently Asked Questions

What distinguishes the SMLE MkI*** from earlier Lee-Enfield models?

The SMLE MkI*** is an update primarily focused on accommodating the faster Mark 7 ammunition. Key identifiers include an 'HV' stamp on the barrel, a ground sight base for a flatter trajectory, a U-notch rear sight, and a square front post for improved aiming.

What was the significance of the Mark 7 ammunition for the SMLE?

Mark 7 ammunition was a .303 British Spitzer cartridge weighing 174 grains and traveling at approximately 2440 feet per second, over 20% faster than the older Mark 6. This necessitated significant sight and ballistic adjustments on the rifle.

How can one identify an Irish contract SMLE MkI*** rifle?

Irish contract SMLE MkI*** rifles often have their original serial numbers lined out and renumbered with 'ER' or 'CR' prefixes. Some 'CR' marked rifles also feature Mark 3 style rear sights with protector wings.

What are the sight differences between Mark 6 and Mark 7 compatible SMLEs?

Rifles adapted for Mark 7 ammunition (MkI***) have a flatter sight base, often marked 'HV', a U-notch rear sight, and a square front post. Earlier models compatible with Mark 6 ammunition typically feature a V-notch rear sight and a barleycorn front post.

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