How Guns are Made: Tolerances, Methods, and Metallurgy (Q&A January 2026)

This video provides an in-depth tour of the Ordnance.com restoration shop, detailing the comprehensive process of bringing antique and military firearms and components back to life. It covers essential stages from initial disassembly and abrasive blasting to bodywork, painting, polishing, and final assembly. The shop utilizes specialized equipment like sandblasting cabinets, CNC water jets, and a paint booth, emphasizing meticulous attention to detail for museum-quality results.

This video provides an in-depth look at the manufacturing process for bolts and bolt carriers at Centurion Arms. It highlights the use of advanced CNC machinery, including twin-spindle lathes and mills, integrated with collaborative robots for efficient, high-volume production. The emphasis is on a multi-stage process involving precise machining, rigorous quality control at multiple checkpoints, and specialized finishing techniques like heat treating and chrome plating to ensure mil-spec compliance and durability. The video also details critical steps like carrier key staking to prevent loosening, showcasing Centurion Arms' commitment to producing high-quality firearm components.

This entry details the historical significance and mechanical operation of the Blanchard lathe, a pivotal invention for the mass production of identical wooden gun stocks. It highlights its adoption by Springfield Armory and its global impact on firearms manufacturing. The information is presented with high authority from firearms expert Ian McCollum.

This video provides an in-depth look at the manufacturing process at Thompson/Center Arms' headquarters in Farmington, New Hampshire. It details updates in their vertical integration, showcasing advanced CNC machining (Eurotech, Akari, Haas), quality control measures like 100% Magnetic Particle Inspection (MPI), and specific processes for barrels and receivers. The tour highlights the production of popular lines including the Encore, Contender, and Triumph, emphasizing efficiency and precision in their operations.

This video details the meticulous process of crafting a custom Beretta shotgun stock, emphasizing the blend of modern CNC machining and traditional hand-fitting techniques. A master gunsmith from Beretta's facility in Gardone Val Trompia, Italy, demonstrates how high-grade walnut is transformed into a bespoke stock tailored to individual shooter dimensions, ensuring optimal performance and aesthetics for models like the DT11. The process highlights precision, craftsmanship, and the importance of a perfect metal-to-wood fit.

The decline in gunsmiths is attributed to technological advancements making firearm parts interchangeable and easily replaceable. Modern firearms utilize CNC-machined and MIM parts that fit precisely, eliminating the need for hand-fitting. Furthermore, the shift away from legacy firearms and the DIY nature of modern finishes like Cerakote have reduced the demand for traditional gunsmithing services.

This guide details the specific technique for separating two MAS-36 rifles that have been inadvertently locked together by their bayonets. It outlines the historical context of this issue, the modification made to the bayonet to resolve it, and the step-by-step procedure for disengagement. The technique requires precise alignment and the use of a pointed tool to access the internal release mechanism, as demonstrated by firearms expert Ian McCollum.

This guide details the loading and firing procedure for the M134 Minigun, as explained by Ian McCollum. It covers manual indexing of the barrel cluster, feeding the ammunition belt, engaging controls, and firing. The guide also touches upon the weapon's spin-down inertia and the function of modern clutch systems. Expert instruction from a recognized firearms historian highlights the technical aspects of operating this powerful weapon system.

This guide details the operational features of the H&K G11 K2, a prototype assault rifle known for its caseless ammunition and unique rotating drum bolt. It covers the selector settings, magazine capacity, integrated optics, and the internal action designed for recoil management during high-rate-of-fire bursts. Expert insights from Ian McCollum highlight the historical context and technical innovations of this advanced firearm.

This guide details the operation of the German L.Gr.W.36 50mm light mortar, as demonstrated by expert Ian McCollum. It covers assembly, leveling procedures, ammunition handling, and live fire execution, emphasizing the difficulty in visually tracking the projectile. The instruction highlights the importance of proper setup for accuracy.