Larry Vickers Podcast Ep.3: HK416 Presented by Firearms Trainers Association

Published on August 13, 2021
Duration: 64:13

This video provides a detailed guide to disassembling and reassembling the HK416, including its piston-driven operating system. Larry Vickers, a firearms instructor, walks through the process step-by-step, highlighting key differences between early and later models, as well as comparisons to the AR-15/M4 platform. The guide covers lower receiver components, bolt carrier group, and upper receiver assembly, emphasizing the proprietary HK design elements.

Chapters

  1. 00:00Introduction & Sponsors
  2. 00:31HK416 Overview & Development
  3. 01:16Ernst Malk & M4 Issues
  4. 02:05Crane Report & SOCOM M4 Problems
  5. 03:04M4's Role & MP5 Replacement
  6. 04:47HK's Approach to M4 Issues
  7. 05:00Visit to HK Germany & Initial Concepts
  8. 05:29Direct Impingement Issues with Short Barrels
  9. 06:44Alternative Platforms: G36 & Sig 552
  10. 07:48Schematic on the Wall & Partnership Idea
  11. 08:40Delta Force Meeting & HK's Offer
  12. 09:20SOCOM's Involvement & Legal Review
  13. 10:02Initial Modifications & Performance
  14. 10:22Rail System & Zero Retention Challenge
  15. 11:14Order Placed & Gun's Success
  16. 11:43Bin Laden Raid & Global Success
  17. 12:00HK Tweaks & Updated Versions
  18. 12:21Disassembly Begins
  19. 12:35Magazine Types & History
  20. 13:29Lower Receiver Takedown
  21. 13:46Buffer & Recoil Spring Details
  22. 14:13Buffer/Spring Identification (Red Dot)
  23. 15:57Heavier Spring Tension & Buffer Setup
  24. 16:46Lower Receiver Components & Safety Features
  25. 17:02Hammer Down Safe Position
  26. 18:02Pistol Grip & Buffer Tube
  27. 18:28Magazine Well Bevel
  28. 19:14Magazine Well Angle & Blank Fire Adapter
  29. 22:02Charging Handle
  30. 22:24Bolt Carrier Group Disassembly
  31. 22:54Firing Pin Safety Mechanism
  32. 24:25Non-Standard Dimensions & Hammer Profile
  33. 25:00Complete Bolt Carrier Disassembly
  34. 25:23Bolt Design (No Gas Rings)
  35. 26:21Piston Strikes & Anti-Tilt Pads
  36. 27:09Piston System vs. Direct Impingement
  37. 28:25Extractor Design
  38. 29:16Upper Receiver & Barrel Nut
  39. 30:00Barrel Profiles (Early vs. Later)
  40. 30:54Pusher Rod & Piston Removal
  41. 31:51Gas System Operation & Venting
  42. 32:41Gas Block Design (Vented vs. Non-Vented)
  43. 33:10Folding Front Sight Interface
  44. 34:20Proprietary Barrel Nut & Thread Length
  45. 35:14Handguard Interface (Tongue & Groove)
  46. 36:47Upper Receiver Details
  47. 37:00Cam Pin Wear Issues
  48. 38:17Barrel Twist & Chamber
  49. 39:17Home Defense Carbine Setup Tips
  50. 41:02Reassembly Process
  51. 41:13Ambi Sling Loops
  52. 41:34Gas Piston & Pusher Rod Reinstallation
  53. 42:02Rail System Reinstallation
  54. 42:33Bolt Carrier Reassembly
  55. 43:52Firing Pin & Safety Reinstallation
  56. 44:36Charging Handle & Bolt Carrier Reinstallation
  57. 45:18Lower Receiver Reassembly
  58. 45:41Magazine Anti-Tilt Follower
  59. 46:08Function Check
  60. 46:39Pictograms & Lower Receiver Markings
  61. 47:04Anodizing Issues on Early Guns
  62. 48:19Comparison: Early vs. Latest HK416
  63. 49:32Selector Switch & Ambi Safety
  64. 49:59Enlarged Bolt Release & Fence
  65. 50:13Ambi Magazine Release
  66. 51:29Enlarged Trigger Guard
  67. 51:47Pistol Grip Options
  68. 52:30Magazine Well Angle Comparison
  69. 53:11Upper Receiver Differences
  70. 53:16HK Folding Sights
  71. 53:31Rail System Differences (HKey vs. KeyMod)
  72. 54:56Buttstock & Castle Nut Design
  73. 58:53Ambi Charging Handle
  74. 59:24Ambi Bolt Release
  75. 59:56Polymer Ejection Port Cover
  76. 60:09Cross Bolt Design
  77. 60:33Reverse Compatibility of Parts
  78. 60:55HK Polymer Magazines
  79. 61:50Color Options (Tan/RAL8000)
  80. 62:04Piston Gun Use Cases
  81. 63:32Conclusion & Future Videos
  82. 63:51CCW Safe Promotion

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