Description
RCM MP5SD 9mm Locking Piece – 115 Degree This locking piece is a US-made version of the factory German MP5SD 115-degree locking piece. Each locking piece is made 100% here in the USA from ordnance grade steel, heat treated, and made to last.
Compatibility & Fitment
- MP5SD models that use a 115-degree locking piece
- Custom builds or clones
What’s Included
- One HK MP5SD Locking Piece – 115 Degree – 9mm
Specifications
- SKU: HKP-02192
- MPN: RCM-GP-LP120
- Brand / Manufacturer: RCM
- Locking piece angle: 115 Degree
- Material / treatment: Ordnance-grade steel; heat treated, per production source.
Installation Notes
- Production source describes this as a US-made version of the factory German MP5SD 115-degree locking piece.
- Use qualified armorer support when changing locking-piece angle, suppressed configuration, or ammunition setup.
Important Warnings
Recommended Add-ons
Related Products
Related locking-piece products are connected through shared HK locking-piece, MP5, MP5K, MP5SD, and RCM taxonomy. Selection should be based on host platform, ammunition, suppressor use, and armorer guidance rather than degree alone.




