Heckler And Koch HK 416 Firing Pin Retaining Pin. Made from steel, this factory original small part from H&K is made in Germany and designed for HK HK416 rifle models chambered in .223 Rem / 5.56x45mm as well as the AR-15 platform. The captive retaining pin installs through the bolt carrier group to retain the firing pin's position. Heckler & Koch is world renowned for their high quality firearms and parts. When you buy an H&K part or accessory, you know that you're getting the highest quality materials and assembly available.
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