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A few months later the Marine Corps tested the weapon with similar results.ДЄlthough the results were impressive, neither service recommended adoption. Test results were impressive: 2,000 rounds were fired with only one stoppage. On April 27, 1920, the Springfield Armory conducted functioning tests of the weapon. In 1920 the prototype was tested by the U.S. Some reports indicate that prototypes were made to fire various calibers. The cyclic rate of fire was approximately 1,000 rounds per minute. One distinctive feature was the firing pin fabricated as forward extremity of the actuator. Provision was made for feeding by a box magazine while the rear grip was placed near the back of the receiver.

The first gun produced, bearing neither model or serial number, appeared in 1918 and was belt fed and with little resemblance to later Thompsons. Nelson in his book, вЂњThe WorldвЂ™s Submachine Guns,вЂќ categorized all Thompson guns into distinct groups based upon manufacturer:ДЎ928A1 & M1 series: Auto-Ordnance & Savage Blish accepted and with the financial backing of Thomas Ryan, the Auto-Ordnance Company was founded in 1916. Thompson, after investigating BlishвЂ™s invention, offered Blish shares in a company he was forming in exchange for the patent. As the pressure dropped, the faces were able to slip across each other, the wedge moved up due to the slope, and the breech unlocked. Under high pressure, as when the cartridge fired, the angle of the slope was such that the mating faces jammed solid. Navy, had in 1915 patented a delayed blowback breech system in which a sloping metal wedge interlocked the breech block with the gun body.

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He also wished to develop a system unencumbered by the patents of large firearms companies and the hefty patent license payments that came with them.Д¬ommander John Blish, U.S. This list of obstacles nearly exhausted the then available methods of operation. Blowback was not suitable for a powerful military cartridge. Recoil operation, he believed, would result in a weapon with too much weight. He rejected gas operation as being too complicated for a shoulder arm. In ThompsonвЂ™s mind to accomplish this end meant overcoming several obstacles. He believed an вЂњintermediateвЂќ automatic weapon in the ballistic class between the pistol and the rifle would be a requirement in future wars. ThompsonвЂ™s primary interest remained the development of an automatic rifle. In December 1918 he retired from the service for a second time. As a result, Thompson was awarded the Distinguished Service Medal. Promoted to brigadier general, he was responsible for the supply of small arms and ammunition to the Allied Expeditionary Force (AEF) in France and by all accounts performed these manifold tasks with the utmost efficiency. 30 caliber and producing it as the M1917. When the United States entered World War I, he was recalled to active duty and was instrumental in adapting the British Enfield rifle to. In 1916 he set up another factory to produce Mosin-Nagant rifles for the Russian Army. There he was responsible for organizing the construction, outfitting and operation of a rifle factory at Eddystone, Pennsylvania, to produce the British Enfield rifle. He was to join Remington Arms Company as their Chief Engineer.

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In November 1914 he retired from the service with the intention of devoting his full time to perfecting an automatic rifle. 45 was the only acceptable cartridge for a handgun and thus leading to the adoption of the Colt. From these tests it was determined that the. Later, in the slaughterhouses of Chicago, he conducted tests on beef cattle to determine the best cartridge. Various calibers were tested on cadavers. He became famous for tests he conducted that resulted in adoption of the. Thompson was involved in the testing and adoption of the Springfield M1903 rifle. During the Spanish-American War he distinguished himself when he directed the supply of munitions at a time of near chaos in the ArmyвЂ™s ordnance and quartermaster units. Upon commissioning, he entered the army in the Artillery, later transferring to the Ordnance Department in 1890. John Taliaferro Thompson was born in 1860 and graduated from West Point in the class of 1882. That finned barrel topped off with a Cutts compensator, the square receiver, either a drum or box magazineвЂ¦ the famous вЂњThompson Submachine Gun.вЂќ Although вЂњsubmachine gunвЂќ is an familiar part of todayвЂ™s gun owner lexicon, the word was created by the man who was responsible for bringing us this great gun.

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Anyone who has watched an old movie or browsed through a book on World War II will quickly recognize the familiar outline of this fine weapon.