Description
Heckler & Koch / H&K receiver extension nut for MR556A1 rifles. This is the receiver extension nut component identified with MPN 50233165. Use it when replacing a worn or damaged nut on the receiver extension assembly.
| Fits | MR556A1 |
|---|---|
| Part Type | Receiver Extension Nut |
| Manufacturer | Heckler & Koch / H&K |
