This is a genuine Tokyo Marui replacement knocker lock spring (part HK45-56) specifically for the TM HK45 GBB pistol. It ensures correct function of the knocker lock mechanism, helping maintain reliability and performance over time.
- Manufactured by Tokyo Marui for factory fit and compatibility
- For repairs, maintenance or restoration of your HK45 GBB
- Supplied individually; always use authentic parts for optimal results
Check your model’s manual for part compatibility before purchase.










