The HK SP5K

Published on July 30, 2018
Duration: 17:55

This video provides an expert-level review of the HK SP5K, a semi-automatic pistol variant of the MP5K. It details the SP5K's design, its relationship to the original MP5K, and addresses common complaints such as the lack of a paddle magazine release and suppressor-ready barrel. The review includes a partial disassembly to explain the internal mechanisms, particularly the roller-delayed blowback system, and contrasts it with full-auto variants, highlighting the modifications made to prevent conversion. The presenter, with apparent expertise in firearms, discusses the SP5K's historical context, its price point, and its appeal to the commercial market.

Quick Summary

The HK SP5K is a semi-automatic pistol variant of the MP5K submachine gun, designed for civilian use. Key differences from the original MP5K include its semi-automatic-only operation and the absence of a paddle magazine release. Modifications to the fire control group and bolt carrier prevent full-auto conversion.

Chapters

  1. 00:09Introduction to the HK SP5K
  2. 00:15SP5K vs. MP5K Comparison
  3. 00:33History of the MP5 Family
  4. 01:30MP5 Features: Magazine, Release, Cocking Handle
  5. 01:56MP5 Select-Fire Options
  6. 02:15Semi-Automatic MP5 Variants: HK 94 & SP89
  7. 03:08Importation Challenges and US Manufacturing
  8. 03:45SP5K Price and Value
  9. 04:02SP5K Disassembly and Internal Look
  10. 04:24SP5K Common Complaints: Paddle Release & Barrel
  11. 05:06SP5K Lower Receiver Assembly
  12. 06:04Ergonomics and Manipulation
  13. 06:49Roller-Delayed Blowback Mechanism Explained
  14. 07:38Fit and Finish of H&K Firearms
  15. 07:54Sights and Optics Mounting
  16. 08:15SP5K Reassembly
  17. 09:11Shooting Technique for SP5K
  18. 09:36US Market Demand for H&K Firearms
  19. 09:57MP5's Decline in US Law Enforcement
  20. 10:039mm vs. 5.56mm Ballistics in Urban Environments
  21. 10:31Global Use of 9mm SMGs
  22. 10:45MP5 Competitors: Colt 9mm & SIG MPX
  23. 11:24H&K's Market Share and Commercial Appeal
  24. 11:35Ideal Pricing for Commercial Sales
  25. 11:47Comparing Full-Auto vs. SP5K Components
  26. 11:59Fire Control Group Differences
  27. 12:50Bolt Carrier Differences: Sear Trip
  28. 13:19Aftermarket Companies and Zenith
  29. 13:38SP5K's Potential in the US Market
  30. 13:50Range Demonstration: Full-Auto MP5 vs. SP5K
  31. 15:55Shooting Impressions of the SP5K
  32. 16:11SBR Conversion Potential
  33. 16:28Magazine Compatibility
  34. 16:35Recommended SP5K Modifications
  35. 16:45Overall Impressions and Future Hopes
  36. 17:14US Production of Long Guns vs. Pistols
  37. 17:21Availability of MR556, MR762, M27 IAR, M110
  38. 17:40Conclusion and Call to Action

Frequently Asked Questions

What is the HK SP5K and how does it relate to the MP5K?

The HK SP5K is a semi-automatic pistol that serves as a civilian-legal clone of the iconic MP5K submachine gun. While the MP5K is a select-fire machine pistol, the SP5K is designed exclusively for semi-automatic fire, making it compliant with US firearm regulations.

What are the main complaints about the HK SP5K?

The two most prominent complaints about the HK SP5K are the absence of the traditional paddle magazine release, which many users prefer, and the barrel's lack of suppressor-ready threading, making it difficult to attach suppressors without aftermarket modifications.

How does the SP5K prevent conversion to full-auto fire?

The SP5K is prevented from being converted to full-auto fire through several design changes. These include modifications to the lower receiver, fire control group, and the bolt carrier, specifically the removal of the sear trip area required for automatic firing.

What is the roller-delayed blowback system used in the SP5K?

The HK SP5K, like other H&K firearms, utilizes a roller-delayed blowback operating system. This mechanism uses rollers to hold the bolt closed longer, allowing chamber pressures to drop to a safe level before the bolt unlocks, extracts, and ejects the spent cartridge case.

Related News

All News →

More Reviews Videos You Might Like

More from SmallArmsSolutions

View all →