SPRs, DMRs, and Long Range ARs - BDU FB Live

Published on October 3, 2019
Duration: 49:08

This video features Don Edwards, a retired SF guy and law enforcement trainer, discussing Special Purpose Rifles (SPRs) and Designated Marksman Rifles (DMRs). He covers their evolution, typical configurations, and practical applications, emphasizing accuracy and force multiplication. The discussion extends to essential gear like optics, night vision devices, and support equipment, offering insights for both civilian and professional shooters.

Quick Summary

The effective engagement window for a 5.56 Special Purpose Rifle (SPR) or Designated Marksman Rifle (DMR) is generally considered to be from 0 to 600 meters. While the rifle provides increased precision over a standard carbine, the shooter's marksmanship skills remain crucial for achieving accuracy at these distances.

Chapters

  1. 00:08Introduction with Don Edwards
  2. 00:19Don Edwards' Background and Expertise
  3. 00:50Topic: SPRs, DMRs, and Accurate 5.56 Guns
  4. 01:50DMRs as Force Multipliers
  5. 02:19Defining SPR: Special Purpose Rifle
  6. 02:35Defining DMR: Designated Marksman Rifle
  7. 03:01Evolution of the SPR Concept
  8. 03:37The Mark 12 Rifle
  9. 04:14Early SPR Builds and SOCOM Procurement
  10. 04:44Fielding Suppressors on Mark 12s
  11. 05:08Mark 262 Ammunition
  12. 05:32Advancements in Civilian Firearms Technology
  13. 06:30The Role of a Squad Designated Marksman
  14. 07:16Building a DMR: Barrel and Receivers
  15. 07:3718-inch Match Barrel (Rosco Purebred)
  16. 08:00Benefits of Ambidextrous Controls
  17. 08:55Barrel Length Discussion: 18 vs. 16 vs. 20 inches
  18. 10:00SPR as a Primary Rifle
  19. 10:37First Focal Plane Scope Recommendations
  20. 10:48Nightforce vs. Vortex Optics
  21. 11:11Optics Magnification for SPR/DMR
  22. 12:12Chromoly vs. Stainless Steel Barrels
  23. 13:17Nitrated Barrels for Accuracy and Durability
  24. 13:36Colin's Message and Night Vision
  25. 14:55Clip-On Night Vision Devices (CNVDs)
  26. 15:03L3 PBS-24 LR CNVD
  27. 15:16Civilian and LE Value of CNVDs
  28. 16:01Evolution from Night Vision Scopes to Clip-Ons
  29. 17:19Limitations of Night Vision Devices
  30. 18:01SPR as a Scalable System
  31. 18:35.308 as the Modern Day 30-06
  32. 19:115.56 vs. .308 Ammunition Commonality
  33. 19:50Bipod Use and Quick-Detach Levers
  34. 20:24Ammunition Commonality on the Battlefield
  35. 20:42Practice Ammunition vs. Match Grade
  36. 21:02DMR Course Overview (Rockcastle)
  37. 21:16Gear Requirements for Training
  38. 21:53Scope Requirements: Magnification and Reticle
  39. 22:50Rifle Accuracy Requirements for Training
  40. 23:20Importance of a Good Trigger
  41. 23:33Stock Considerations for Rear Bag Use
  42. 24:25Target Engagement Window for SPR/DMR
  43. 25:15Illuminated Reticle Debate
  44. 26:54Magpul Mag Pod for Stability
  45. 27:23Magazine Capacity: 20 vs. 30 Rounds
  46. 28:04Tripod Use for Stability
  47. 30:00Essential Support Gear: Rear Bags
  48. 31:27Rear Bag Versatility
  49. 31:27Round Count for Training Classes
  50. 32:04Zeroing Strategy: 100 Yards
  51. 32:45Magnification Setting for SPR/DMR
  52. 33:10LPR (Light Precision Rifle) Review
  53. 34:54Favorite SPR/DMR Build
  54. 35:31Key Factors in SPR/DMR Builds: Barrel & Trigger
  55. 35:51Ballistic Apps and Wind Meters
  56. 37:21Essential Tools for Classes
  57. 38:41Stock Recommendations for Rear Bag Use
  58. 39:45Ammunition Quality and Standard Deviation
  59. 41:55Using Illuminators with CNVDs
  60. 43:11CNVD Magnification Ratings
  61. 44:14Don Edwards' Upcoming Classes
  62. 45:34Don Edwards' Contact Information
  63. 46:06Nightforce 2.5-10x24 Scope Discussion
  64. 47:00MOA vs. Mil Reticles
  65. 47:19Challenges with MOA Reticles in Training
  66. 48:31Conclusion and Big Daddy Unlimited

Frequently Asked Questions

What is the effective engagement range for a 5.56 SPR or DMR?

The effective engagement window for a 5.56 Special Purpose Rifle (SPR) or Designated Marksman Rifle (DMR) is generally considered to be from 0 to 600 meters. While the rifle provides increased precision over a standard carbine, the shooter's marksmanship skills remain crucial for achieving accuracy at these distances.

What are the key differences between SPRs and DMRs?

SPRs (Special Purpose Rifles) evolved from specialized upper receivers for enhanced accuracy, while DMRs (Designated Marksman Rifles) are rifles specifically configured to fill a precision support role within a squad, engaging targets beyond standard rifle range, typically out to 600 meters.

What magnification range is recommended for SPR and DMR optics?

For SPRs and DMRs, a magnification range of 8x to 16x is considered ideal. A minimum of 8x is recommended for effective target identification and engagement at longer distances, with higher magnifications like 10x or 12x offering further advantages for holdovers and precision.

Are illuminated reticles necessary for SPRs and DMRs?

Illuminated reticles are generally not considered essential for tactical SPR and DMR use. In extremely low light conditions where illumination might be needed, target visibility is often compromised regardless. Some shooters find they can hinder vision transitions and add complexity.

What are the benefits of ambidextrous controls on SPRs and DMRs?

Ambidextrous controls on SPRs and DMRs significantly enhance usability, particularly when shooting from the prone position. They allow for easier manipulation of the bolt catch, magazine release, and charging handle without the shooter needing to break their firing grip or alter their body position.

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