The HK SP5K delivers the legendary MP5 platform in a civilian-legal semi-automatic configuration. This compact 9mm pistol combines HK's roller-delayed blowback system with modern manufacturing precision for exceptional reliability and accuracy.
What Makes This Different
The SP5K utilizes HK's proven roller-delayed blowback operating system, eliminating the need for a traditional gas system or direct impingement. This closed-bolt design provides consistent lockup and enhanced accuracy compared to open-bolt alternatives. The welded steel receiver construction exceeds the durability standards of stamped competitors, while the three-lug barrel attachment point accepts standard HK suppressors and flash hiders.
Key Features
- Roller-delayed blowback action for smooth cycling and reduced felt recoil
- Cold hammer-forged barrel with 1:10 twist rate for optimal 9mm performance
- Welded steel receiver with matte black finish for corrosion resistance
- 30-round steel magazine with anti-tilt follower design
- Three-lug barrel attachment compatible with HK suppressors
- Ambidextrous safety selector with semi-auto and safe positions
- Picatinny rail system for optics and accessory mounting
Range testing demonstrates consistent sub-2 MOA accuracy with quality ammunition, while the roller-delayed system cycles reliably with both subsonic and +P loads. The compact 8.9-inch overall length makes it suitable for close-quarters applications, while maintaining the accuracy potential for precision work out to 100 yards. The sealed action design resists fouling and environmental contamination better than direct blowback alternatives.
Technical Specs
- Caliber: 9mm Luger
- Action: Semi-automatic, roller-delayed blowback
- Barrel Length: 5.83 inches
- Overall Length: 13.39 inches
- Weight: 4.52 pounds (unloaded)
- Magazine Capacity: 30 rounds
- Receiver: Welded steel construction
- Finish: Matte black coating
- Country of Origin: Germany
The SP5K represents decades of HK engineering refinement in a package that maintains the authentic MP5 manual of arms. Limited production numbers and HK's reputation for longevity make this a sound investment for collectors and serious shooters alike.