Operating out of his home workshop in California, John Martz is best known for his alterations and upgrades of Luger and P-38 pistols, all of which were performed by him and often took several months of work. Manufactured using a combination of new-made components and vintage Luger parts, this pistol takes the overall form and configuration of a post-World War I commercial-pattern Luger, up-sizes it to run the 45 ACP cartridge, and integrates the Martz Safe Toggle Release mechanism, which converts the safety switch into a dual purpose safety and toggle release lever. Blade front and fixed notch rear sights, with a blank "crown/N" proofed chamber, "JVM" toggle link and "GERMANY" marked extension, with "45 A C P" on the underside of the barrel, "JVM" and "46" beneath the side plate, the "MSTR" mark on the left frame rail, and a fine finish with straw and niter blue small parts. Fitted with a pair of smooth bordered checkered walnut grips, and one custom bright steel 45 ACP magazine with "1/JVM" marked hardwood base.