Henry cooks up an MP5K - 9 Hole VLOG (HK vs PTR vs MKE)

Published on April 30, 2024
Duration: 21:18

This video details the process of modifying and enhancing the reliability of an MP5K-pattern firearm, specifically addressing issues found in MKE variants. It covers replacing key internal components like the ejector and extractor spring with German H&K parts to ensure proper function. The guide also explores various accessory installations, including MFI picatinny rails and B&T stocks, to optimize ergonomics and optic mounting for improved shootability and packability.

Quick Summary

MKE MP5K firearms can suffer from ejection and extraction failures due to faulty ejectors, requiring replacement with German H&K parts. Enhancing ergonomics involves MFI picatinny rails for optics and B&T stocks, while optic height is critical for effective sight acquisition when using a stock.

Chapters

  1. 00:05Midway USA Sponsorship
  2. 00:13MP5K Acquisition Story
  3. 01:09Heading to Henry's Workshop
  4. 01:31Workshop Tour & Initial Setup
  5. 02:00Josh's MK MP5K Overview
  6. 02:23Modification Plan: Standard to Tricked Out
  7. 02:31Handguard and Top Rail Upgrades
  8. 02:49Stock and Grip Considerations
  9. 03:11True Navy vs. SEF Grips
  10. 03:35Two-Stage Trigger Installation
  11. 04:02Trigger Break-In and Feel
  12. 04:22Rear Sight Options
  13. 04:38SEF Trigger Group Analysis
  14. 05:06MK Ejection and Extraction Issues
  15. 05:26Ejector Replacement: Turkish vs. German
  16. 06:15Extractor Spring Comparison
  17. 06:38Spring Swap for Reliability
  18. 06:50MFI Rail Installation
  19. 07:35Trunnion Machining Check
  20. 08:04Front Push Pin Differences
  21. 08:34Trigger Feel Test
  22. 09:06PTR MP5K Trigger Comparison
  23. 09:36Fire Control Group Swaps
  24. 09:53PTR Reliability and Break-In
  25. 10:28Trigger Pull Weight Comparison
  26. 10:42Claw Mount vs. B&T Style Mounts
  27. 11:07Dual Use HK 33/MP5 Top Rail
  28. 11:31MFI Rail Benefits
  29. 12:06Charging Handle Manipulation
  30. 12:22Mission Success: Modified MP5Ks
  31. 12:30MP5K PDW vs. Josh's Build
  32. 13:11Magazine Options
  33. 13:20Optic Mounting and Iron Sights
  34. 13:45Thumb Clearance Check
  35. 13:54Baby Sniper MP5K
  36. 13:59Short Mag Benefits
  37. 14:14Weight Comparison (with Optic)
  38. 14:24Weight Comparison (with T2 Optic)
  39. 14:33Old School MP5K PDW Weight
  40. 14:48Weight with Suppressor
  41. 14:51Weight Without Suppressor
  42. 14:54CH Stock Weight Discussion
  43. 15:13Internal Structure of Stocks
  44. 15:27Thank You and Range Time
  45. 16:57Back on the Range: Adjustments
  46. 17:12Primary Adjustments: Optic & Front Rail
  47. 17:23Optic Upgrade: Aimpoint T2
  48. 17:40Scalerworks Mount & Absolute Co-Witness
  49. 17:49Maximizing Shootability
  50. 17:54Cheek Weld with B&T Stock
  51. 18:13Contrast with Henry's Setup
  52. 18:20Packability vs. Shootability
  53. 18:44Front Rail Accessories: Light Setup
  54. 18:53Compromise Light Position
  55. 19:11Henry's Flush Front K
  56. 19:23Alternative Light Bar Setup
  57. 19:57Hand/Palm Discomfort with Light Bar
  58. 20:07Girth Concerns with Light Bar
  59. 20:26Suppressor Clearance
  60. 20:32Compromise Tier Mount
  61. 20:45Balancing Concealability and Shootability
  62. 20:48Time to Shoot
  63. 20:56Firing Sequence

Frequently Asked Questions

What are common reliability issues with MKE MP5K firearms?

MKE MP5K firearms can experience ejection and extraction problems, often due to improperly heat-treated or geometrically flawed ejectors. This can cause spent casings to be pushed back towards the chamber, necessitating replacement with German H&K parts for improved reliability.

How can MP5K ergonomics and shootability be improved?

Ergonomics and shootability on an MP5K can be enhanced by installing accessories like an MFI continuous picatinny top rail for versatile optic mounting and a B&T stock for better shouldering. Optic height is crucial, with absolute co-witness mounts offering a good balance for shooters using stocks.

What are the differences between SEF and Navy grips on H&K firearms?

SEF (Standard/Express/Fire) trigger packs and grips are not interchangeable with true Navy trigger packs due to internal design variations. While some aftermarket grips may resemble Navy grips, the internal trigger pack compatibility is a key distinction.

What are the considerations for mounting lights on an MP5K's accessory rail?

Mounting lights on an MP5K rail involves balancing packability with usability. Positioning the light too far forward can increase snag potential, while placing it too far back might interfere with hand placement or require a less ergonomic switch. Suppressor clearance is also a factor.

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