The Heckler & Koch Buffer Retainer Pin (H&K part no. 50986544) is a genuine factory part built for the HK416 platform, fitted to the MR762A1. It is the small pin that holds the spring-loaded buffer retainer captive in the lower receiver, and a lost or bent pin can let the retainer work loose during disassembly.

Key Specifications

• built for the HK416 platform specifically fitted to the MR762A1.
• holds the buffer retainer captive in the lower receiver against spring pressure.
• factory H&K replacement part matching original fit rather than an aftermarket substitute.

Frequently Asked Questions

What rifle platform is this for? It is a factory-correct buffer retainer pin for the HK416 platform, fitted to the MR762A1.

What happens if this pin is missing? The spring-loaded buffer retainer can work loose or fall out during disassembly without it.

Buy the HK416 Buffer Retainer Pin

Replace a lost or bent retainer pin with the current factory H&K part. Browse more of our rifle parts selection and order from our Lubbock, Texas gun shop for fast shipping.