SIG Sauer P320-M18

Published on February 13, 2020
Duration: 27:37

This review of the SIG Sauer P320-M18 highlights its military adoption and civilian availability. The reviewer praises its balance, ergonomics, and the effectiveness of its ambidextrous safety. Performance with various ammunition types, including +P, is discussed, along with its optic-ready slide and compatibility with specific red dot sights.

Quick Summary

The SIG Sauer P320-M18 is a compact variant of the military's M17 service pistol, featuring a 3.9-inch barrel and a full-size grip. It includes ambidextrous safeties and an optic-ready slide compatible with DeltaPoint Pro and Romeo1 Pro sights. The M18 handles +P ammunition well and demonstrated excellent accuracy with Federal Premium HST 124-grain JHP rounds in testing.

Chapters

  1. 00:30First Shots with P320-M18
  2. 01:12Balance and Recoil Management
  3. 02:22M18 vs. M17 Comparison
  4. 03:08Slide and Grip Frame Design
  5. 03:48Dimensions and Weight
  6. 04:09Striker-Fired 9mm Chassis System
  7. 04:33Ambidextrous Safeties
  8. 04:46SIG Light Night Sights & Optic Cut
  9. 05:18Control Color and Military Spec
  10. 06:04P320 Family and Trigger Preference
  11. 06:22Coyote Tan Finish
  12. 07:50Ammunition Testing: Standard Ball
  13. 08:38Sight Picture and POI
  14. 10:13Trigger Feel Analysis
  15. 11:09Grip Module Ergonomics
  16. 12:04Post-Range Thoughts (200+ Rounds)
  17. 13:41Optic Mounting: DeltaPoint Pro
  18. 14:13Loaded Chamber Indicator Detail
  19. 15:37Torque Specs for Optic
  20. 17:40External Manual Safety Review
  21. 19:50Recoil Spring and Ammo Handling
  22. 20:13Handload Testing
  23. 21:36Rested Shooting Accuracy Test
  24. 23:01Optic Fouling from LCI
  25. 24:28M18 vs. M17 Side-by-Side
  26. 25:13Who Should Buy the M18?
  27. 25:58Overall Performance and Reliability

Frequently Asked Questions

What are the key differences between the SIG Sauer P320-M18 and the P320-M17?

The primary difference between the SIG Sauer P320-M18 and the M17 is the slide and barrel length. The M18 features a shorter 3.9-inch barrel and slide compared to the M17, making it more compact while retaining the same full-size grip frame and magazine capacity.

Does the SIG Sauer P320-M18 have an ambidextrous safety?

Yes, the SIG Sauer P320-M18 is equipped with ambidextrous external thumb safeties, which are intuitive to operate and allow for slide manipulation even when the safety is engaged, enhancing operational flexibility.

What optics are compatible with the SIG Sauer P320-M18?

The P320-M18's slide is cut to accept specific red dot sights, primarily the Leupold DeltaPoint Pro and the SIG Sauer Romeo1 Pro. Mounting requires removing the rear sight plate.

How does the SIG Sauer P320-M18 handle +P ammunition?

The P320-M18 is designed to reliably handle +P ammunition, featuring a recoil spring system robust enough for these higher-pressure loads. Performance with lighter loads may result in less vigorous ejection.

What is the best performing ammunition for the SIG Sauer P320-M18 based on accuracy tests?

In rested shooting tests at 20 yards, the Federal Premium HST 124-grain jacketed hollow point ammunition delivered the best group sizes with the SIG Sauer P320-M18, outperforming other tested self-defense and ball rounds.

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