Welcome to the H&K gun parts section of We carry a complete line of most current production and post production Heckler & Koch firearm parts. Parts are available to the public for self installation, but can also be installed by our highly trained gunsmiths. Midwest Gun Works Gunsmiths can offer you the knowledge and skill that your HK firearm deserves. Please scroll down to find model specific parts for your HK firearm, or click on one of the links below to browse more HK products and services.