Sig M18

Published on August 12, 2020
Duration: 17:03

This review of the Sig Sauer M18, the US Marine Corps' service pistol, covers initial shooting tests with various ammunition types, including Federal Syntech, Norma, and Speer Gold Dot. Expert insights highlight the M18's modularity via its P320 chassis, its optic-ready slide, and ambidextrous controls. Comparisons are made to the M17 and Glock 19, with observations on accuracy, trigger feel, and reliability, including potential malfunctions with specific ammunition and aftermarket magazines.

Quick Summary

The Sig Sauer M18, adopted by the US Marine Corps, is a compact 9mm pistol built on the modular P320 platform. It features an optic-ready slide, SIGLITE night sights, ambidextrous controls, and a Coyote PVD finish. While generally reliable, initial break-in with low-velocity ammo can cause malfunctions.

Chapters

  1. 00:00Introduction to the Sig M18
  2. 01:03Ammunition and Initial Malfunctions
  3. 01:58M18 vs. M17 Comparison
  4. 02:50Modular Chassis System
  5. 03:41Accuracy Testing with Norma Ammo
  6. 04:34Magazine Capacity and Supply Issues
  7. 05:24Key Features and Build Quality
  8. 06:34Defensive Load Testing
  9. 08:50Comparison to Glock 19
  10. 10:53ETS 30-Round Magazine Test
  11. 12:24Recoil System and Knife of the Day

Frequently Asked Questions

What are the key differences between the Sig M18 and M17 pistols?

The Sig M18 is the compact version of the P320, comparable in size to a Glock 19, making it suitable for concealed carry. The M17 is the full-size variant, similar to a Glock 17, offering a larger grip and longer sight radius.

What ammunition was tested in the Sig M18 review?

The review tested Federal Syntech 150 grain subsonic rounds, Norma 115 grain FMJ, and Speer Gold Dot 147 grain duty ammunition. Initial issues were noted with the subsonic rounds during the break-in period.

What makes the Sig M18 modular?

The Sig M18, built on the P320 platform, features a removable serialized fire control unit (chassis). This allows the user to easily swap grip modules and slide assemblies for customization, maintenance, or caliber changes.

How does the Sig M18 compare to the Glock 19?

The reviewer expressed a preference for the Sig M18 over the Glock 19, citing the M18's superior trigger feel and overall shooting experience, despite the Glock 19's established reputation.

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