Product Overview
The Haga Defense 1913 Stock Block is for HK USC upper receivers used with HK UMP lowers providing a Picatinny (1913) interface for mounting compatible stocks or braces. Machined from 6061 aluminum with Mil-A-8625 Type III Class 2 hardcoat anodized black finish, this adapter reuses factory mounting screws and buffer for a solid, clean installation.
Specifications
- Material: 6061 aluminum
- Finish: Mil-A-8625 Type III Class 2 hardcoat anodize, black
- Rail: Picatinny (1913)
- Mounting: Reuses factory mounting screws and buffer
- Included: 1913 stock block
- Made in: USA
Compatibility and Installation Notes
- Compatible with HK USC upper receivers used with HK UMP lowers
- Reuses factory mounting screws and buffer
- No permanent modifications required
Legal Note
Always ensure your firearm configuration complies with all applicable federal, state, and local laws.
Always ensure your firearm configuration complies with all applicable federal, state, and local laws.
Installation Instructions
- Safety First: Before beginning installation, make sure the firearm is completely unloaded, the chamber is empty, and the safety is engaged. Remove the magazine, visually and physically inspect the chamber to confirm it is empty, and point the firearm in a safe direction at all times.
- No further installation instructions available at this time.
