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  2. Springfield model 1873 - Wikipedia

    en.wikipedia.org/wiki/Springfield_model_1873

    The Model 1873 was the fifth variation of the Allin trapdoor design, and was named for its hinged breechblock, which opened like a trapdoor. The infantry rifle model featured a 32 5 ⁄ 8 -inch (829 mm) barrel, while the cavalry carbine used a 22-inch (560 mm) barrel.

  3. Trapdoor mechanism - Wikipedia

    en.wikipedia.org/wiki/Trapdoor_mechanism

    Springfield Model 1866, trapdoor breech closed. In 1872–1873 a military board, headed by Brigadier-General Alfred H. Terry, conducted an examination and trial of 99 rifles from several domestic and foreign manufacturers, including those from Springfield, Sharps, Peabody, Whitney, Spencer, Remington, and Winchester pursuant to the selection of a breech-loading system for rifles and carbines ...

  4. Springfield rifle - Wikipedia

    en.wikipedia.org/wiki/Springfield_rifle

    Springfield Model 1869 – .50-70 caliber trapdoor cadet rifle. [7] Springfield Model 1870 – .50-70 caliber trapdoor rifle. [8] Springfield Model 1870 Remington-Navy – .50-70 caliber rolling-block rifle. [9] Springfield Model 1871 – .50-70 caliber rolling-block rifle. [10] Springfield Model 1873 – .45-70 caliber trapdoor rifle. [11 ...

  5. Springfield Model 1866 - Wikipedia

    en.wikipedia.org/wiki/Springfield_Model_1866

    Springfield Model 1866 breech. The Springfield Model 1866 was the second iteration of the Allin-designed trapdoor breech-loading mechanism. Originally developed as a means of converting rifle muskets to breechloaders, the Allin modification ultimately became the basis for the definitive Springfield Model 1873, the first breech-loading rifle adopted by the United States War Department for ...

  6. Springfield model 1884 - Wikipedia

    en.wikipedia.org/wiki/Springfield_Model_1884

    A round-rod bayonet model was also produced, designated the Model 1888. This, like the Springfield model 1880, was an attempt to combine the cleaning rod and bayonet into a single unit. The Model 1888 included an improved retaining mechanism, as the Model 1880's retaining mechanism had proved to be problematic.

  7. .50-70 Government - Wikipedia

    en.wikipedia.org/wiki/.50-70_Government

    Meanwhile, the Army, which had exited the Civil War with an inventory of almost a million percussion-fired muzzleloaders, converted Springfield Model 1863 and Model 1864 muskets to metallic cartridge ammunition using the Allin conversion (trapdoor) method, as well as cadet rifles. The first of the .50-70 conversions was the Springfield Model 1866.

  8. Texas wants to buy surplus border wall parts but U.S ... - AOL

    www.aol.com/texas-wants-buy-surplus-border...

    Texas Attorney General Ken Paxton (left) and Lt. Gov. Dan Patrick greet then-President Donald Trump at the foot of Air Force One at Austin-Bergstrom International Airport in 2019.

  9. Springfield Model 1868 - Wikipedia

    en.wikipedia.org/wiki/Springfield_Model_1868

    Over 50,000 Model 1868 rifles were manufactured, chambered for the .50-70 450 cartridge. This model served as the basis for the definitive Springfield Model 1873 series of rifles in .45-70-405 caliber, which was adopted in 1873 as the standard military longarm of the United States armed forces for the next 20 years.