Centurion Arms MK11 Mod0 with Monty LeClaire

Published on February 14, 2026
Duration: 37:46

This video provides an expert-level overview of the Centurion Arms MK11 Mod 0 clone, presented by Monty LeClaire, founder of Centurion Arms and a retired Navy SEAL. The discussion delves into the rifle's lineage from the SR-25 and its evolution into the M110, highlighting key technical enhancements in the Centurion Arms clone. LeClaire, with his extensive operational and manufacturing experience, details features like the 5R barrel, ambidextrous receivers, and a chrome-plated BCG with 'sand cutter' grooves, emphasizing reliability and accuracy improvements.

Quick Summary

The Centurion Arms MK11 Mod 0 clone, discussed by retired Navy SEAL Monty LeClaire, features a 20-inch 5R barrel and a chrome-plated BCG with 'sand cutter' grooves. Its gas port is timed to a rifling groove for improved accuracy, building on the legacy of the SR-25 and M110.

Chapters

  1. 00:00Introduction: Monty LeClaire & Centurion Arms
  2. 00:35History: MK11 Evolution from SR-25
  3. 01:55SEAL Team Sniper Suite Context
  4. 03:05Early MK11 Mod 0 Reliability Issues
  5. 07:25Evolution to M110 and MK20
  6. 13:15Centurion Arms MK11 Mod 0 Clone Features
  7. 16:14Technical Enhancements: Gas Port & Receivers
  8. 18:40Bolt Carrier Group (BCG) Details
  9. 22:42Variants and Full-Auto Testing

Frequently Asked Questions

What is the historical significance of the MK11 Mod 0 rifle?

The MK11 Mod 0 evolved from Gene Stoner's SR-25 design, aiming to adapt the AR-10 concept for modern military use with 7.62 NATO. It was adopted by SOCOM, serving as a crucial semi-automatic sniper rifle that replaced older bolt-action systems and paved the way for the M110 SASS.

What are the key technical features of the Centurion Arms MK11 Mod 0 clone?

The Centurion Arms clone features a 20-inch 5R cut-rifled barrel, billet receivers with an ambidextrous lower, and a fully chrome-plated Bolt Carrier Group (BCG). Notably, its gas port is timed to a rifling groove to enhance accuracy and reduce copper fouling.

Who is Monty LeClaire and what is his expertise regarding the MK11?

Monty LeClaire is the founder of Centurion Arms and a retired Navy SEAL sniper. His direct operational experience with the MK11 during his SEAL career, combined with his expertise in firearms manufacturing, provides authoritative insight into the rifle's development, performance, and modern iterations.

What were the initial reliability challenges with the MK11 Mod 0?

Early MK11 Mod 0 rifles faced significant issues including problems with scope reticles, inconsistent accuracy, and mechanical reliability. These were considered typical 'growing pains' of early production that were later addressed as the platform evolved into the M110.

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