HK MP5k SP5k Recoil Spring Rod Assembly

HK MP5K / SP5K Recoil Spring Rod Assembly

HK Part Number: 206400

The HK MP5K/SP5K Recoil Spring Rod Assembly is a factory German OEM component designed specifically for the compact MP5K‑pattern operating system. This assembly includes the recoil rod and spring unit responsible for controlling bolt movement, absorbing recoil energy, and ensuring reliable cycling in the shorter K‑length receiver. Built to HK’s precise tolerances, it provides the correct spring rate and travel required for dependable operation in both factory SP5K models and in‑spec K‑pattern builds.

Key Features

• Authentic HK German production for exact fit and long‑term durability
• Correct recoil assembly for MP5K‑length firearms
• Ensures proper bolt travel and cycling in compact 9mm roller‑delayed systems
• Ideal replacement part for worn assemblies or clone‑correct builds
• Drop‑in fit with factory‑spec dimensions and spring rate

Compatibility

• HK MP5K
• HK SP5K
• HK SP5K PDW
• In‑spec MP5K‑pattern clones and custom builds