Surefire M600DF 1,500 Lumen Scout Vs. M600U 1,000 Lumen Scout: Best AR Light?

Published on October 24, 2019
Duration: 11:42

This video compares the Surefire M600DF 1,500 Lumen Scout light with the M600U 1,000 Lumen Scout light, focusing on their performance, battery options, and physical differences. The M600DF offers higher output and dual-fuel capability (18650 or CR123A), while the M600U is a more traditional 1000-lumen light using only CR123A batteries. Both lights are noted for their durability, modularity, and US manufacturing.

Quick Summary

The Surefire M600DF offers dual-fuel capability, running on either a rechargeable 18650 battery for 1,500 lumens and 16,000 Candela, or two CR123A batteries. The M600U is a 1,000-lumen light exclusively using CR123A batteries. While the 18650 provides more power, it's subject to parasitic drain, whereas CR123A batteries offer longer shelf life.

Chapters

  1. 00:36Introduction: M600U Overview
  2. 01:13Introducing the Surefire M600DF
  3. 01:24Physical Differences: Head & Body Size
  4. 01:41M600DF Body Bore for 18650 Batteries
  5. 01:50Mounting and Tail Cap Similarities
  6. 02:32Nighttime Beam Pattern Comparison
  7. 03:02M600DF vs M600U with CR123A Batteries
  8. 03:59M600DF with 18650 Battery vs M600U
  9. 04:14Beam Comparison at 120 Yards
  10. 04:35Tail Cap Modularity and Functionality
  11. 05:33Total Output Comparison
  12. 05:50M600DF Runtime and Candela (18650)
  13. 06:0018650 Battery Compatibility Issues
  14. 06:33Rechargeable Battery Advantage
  15. 06:47Parasitic Drain on Rechargeable Batteries
  16. 07:28CR123A Battery Shelf Life Advantage
  17. 07:41Cross-Compatibility with Gear (Nods, Optics)
  18. 08:00Weight Difference
  19. 08:12Slimmer Profile of M600U
  20. 08:25Head Swapping for IR (M600U only)
  21. 08:36Cost Difference
  22. 08:59Past Battery Issues with Dual Fuels
  23. 09:14Overall Quality and Durability
  24. 09:22Mounting Options
  25. 09:28Trust and Endorsement
  26. 09:41Questions and Contact
  27. 10:01Channel Subscription and Notifications
  28. 10:16Email List Recommendation
  29. 10:30Outro

Frequently Asked Questions

What is the main difference between the Surefire M600DF and M600U Scout lights?

The primary difference is the M600DF's dual-fuel capability, allowing it to run on either a rechargeable 18650 battery or two CR123A batteries, producing up to 1,500 lumens. The M600U is a 1,000-lumen light that exclusively uses CR123A batteries.

How do the battery options affect the Surefire M600DF's performance?

When using an 18650 battery, the M600DF delivers higher output (1,500 lumens) and 16,000 Candela for approximately 1.5 hours. Using CR123A batteries reduces its output and runtime compared to the 18650 option.

Are the Surefire M600DF and M600U bodies interchangeable?

No, the bodies are not interchangeable. The M600DF has a larger diameter bore to accommodate 18650 batteries, making its body incompatible with the M600U's head and vice-versa. The tail caps, however, are compatible.

What are the advantages of using an 18650 battery with the Surefire M600DF?

The main advantage is the higher lumen output and increased throw (Candela). Additionally, 18650 batteries are rechargeable, which can significantly reduce long-term costs for users who train frequently, compared to disposable CR123A batteries.

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