Let us show you that we can make a difference in your firearms! A method and apparatus for electrochemical rifling of gun barrels and the like is disclosed. Winchester Firearms Manufacturing Dates by Serial Number and Year 1866 through the early 1990s The following pages were scanned from documents compiled over the years by the customer service department of Winchester Repeating Arms. Unlike most industries, the gun market is not susceptible to recessions or changes in technology, but solely, to government intervention and the adoption of more stringent gun laws. Barrels: Beyond the receiver, the key to a rifle's accuracy is its barrel. H&M Blacknitride+™ makes your gun’s metal 10 times stronger than it was originally. Gun statistics for the manufacturing and production of firearms reveal that the gun market is unique in structure and fundamentals. In the 1950s, when the M1 was in production, Armory workers could produce one stock per man per minute. Once rifled, we subject the barrels to a number of processes to ensure the stability and accuracy we are known for. This video shows the process of cut-rifled barrel-making by one of the world's best barrel manufacturers. When the Armory began production of the M1795 musket it took fourteen man-hours to produce a gun stock. Martinez del Espinar, the personal gun-bearer of King Philip IV of Spain, mentions that a quality gun barrel 1 metre long that is forged with this method should weigh just 2 kg. The barrels are produced from solid bar, this is deep hole drilled on specialist deep hole drilling machines, a method of manufacture that ensures that the bore is straight and has a superior surface finish ready for swaging. The barrel was originally part of a hand-held gun (a hackbut?) Even though these barrels are consecutively made, their signatures should still be different. Tank gun barrel forgings; Self-propelled howitzer forgings; Naval guns; Helicopter and aircraft barrels ; Mortar barrels; Increasing system life. In June of 2013, MPA purchased Spencer Rifle Barrels. By nature of the process, the steel is hardened through a thermochemical treatment to the steel which makes the steel harder and resistant to water penetrations. It increases the velocity of your barrel by a few hundred feet-per-second and slickens the surface to make your gun extremely lubricated. Publishes research on use of raw materials, energy and process efficiency, control, and technology for new manufacturing techniques, processes and automation. Gun barrels are the obvious example; hence the name. o Increase systems’ service life. Manufacture barrel blanks with UNISIG’s two machine cell with a lower initial investment for lower volume production. Our enthusiasm for barrels shows with our quality and willingness to accommodate small batch orders as well as high-volume demands. • Once a manufacturer chooses a rifling process, the class characteristics of the weapon’s barrel will remain consistent, each will have the same number of lands and grooves, with the same approximate width and direction of twist. Consecutively manufactured EBIS barrels with the same EBIS pattern are significant to the study because these barrels will be manufactured with the same EBIS equipment/tools and exhibit a similar pattern. In addition to the equipment needed to produce world class barrels, Clay’s methods and practices are followed to a “T”. Preferred Barrel Blanks Our company specializes in producing barrel blanks for precision firearms. Because semi-auto RPD variants are manufactured using de-milled parts kits from full-auto RPD machine guns, in order to comply with ATF regulations the full-auto parts must be modified such that the resulting semi-auto rifle cannot be readily converted into a machine gun. They are produced from 4150 gun-certified chromemoly steel, double stress relieved at the steel mill, and cryogenically treated. This method has many advantages compared with the convantional methods; cutting (broach rifling), button rifling, forging and electrochemical rifling. manufacturing processes in its capability to produce a diversity of part geometries and geometric features Casting can also produce a variety of shapes, but it lacks the precision and accuracy of machining ©2002 John Wiley & Sons, Inc. M. P. Groover, “Fundamentals of Modern Manufacturing 2/e” Classification of Machined Parts 1. Howitzer forgings ; Naval guns ; Helicopter and aircraft barrels ; Increasing system life only! 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