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  2. M1903 Springfield - Wikipedia

    en.wikipedia.org/wiki/M1903_Springfield

    Barrel specifications were, in general, unchanged between the M1903A3 and M1903A4, however, the War Department did start installing barrels with 2 groove rifling instead of 4 groove, despite the lack of clear changes from the 4 groove rifling that was the standard up until 1942.

  3. Pedersen device - Wikipedia

    en.wikipedia.org/wiki/Pedersen_device

    His final design replaced the bolt of a modified Springfield M1903 rifle with a device consisting of a complete firing mechanism and a small "barrel" for a new .30 caliber pistol like cartridge. In effect, the "device" was essentially a complete blowback pistol minus a receiver-grip using the short "barrel" of the device to fit into the longer ...

  4. Springfield Model 1892–99 - Wikipedia

    en.wikipedia.org/wiki/Springfield_Model_1892–99

    The Springfield Model 1892–99 Krag–Jørgensen rifle is a Norwegian-designed bolt-action rifle that was adopted in 1892 as the standard United States Army military longarm, chambered for U.S. caliber .30-40 Krag cartridges.

  5. .30-06 Springfield - Wikipedia

    en.wikipedia.org/wiki/.30-06_Springfield

    The .30-06 Springfield cartridge case can hold 68.2 grains and has a volume of 4.42 millilitres (0.270 in 3). The exterior shape of the case was designed to promote reliable case feeding and extraction in bolt-action rifles and machine guns alike, under extreme conditions. [citation needed].30-06 Springfield maximum C.I.P. cartridge dimensions.

  6. Barrel threads - Wikipedia

    en.wikipedia.org/wiki/Barrel_threads

    Barrel nut Attaching the barrel to the receiver using a barrel nut and a barrel with a shoulder is an alternative to action threads, which has been used in firearms such as the Sten gun and AR-15. Hand tools Quick barrel change systems is an increasingly popular alternative, as seen in for example SIG Sauer 200 STR, Roessler Titan or Blaser R8.

  7. M1917 Enfield - Wikipedia

    en.wikipedia.org/wiki/M1917_Enfield

    The M1917's barrel had a 1 in 10 in (254 mm) twist rate and retained the 5-groove left hand twist Enfield-type rifling of the P14, in contrast to the 4-groove right hand twist rifling of the M1903 Springfield and other US designed arms. The M1917 had a long 26-inch heavyweight barrel compared to the lighter 24-inch barrel of the M1903 Springfield.

  8. 7.65×20mm Long - Wikipedia

    en.wikipedia.org/wiki/7.65×20mm_Long

    The cartridge dimensions were identical, although Pedersen device cartridges were loaded with a slightly heavier 80 grains (5.2 g) bullet which achieved a velocity of 1,300 feet per second (400 m/s) in the longer barrel of M1903 Springfield rifles. [1] Remington Arms produced 65 million cartridges for the Pedersen device between 1918 and 1920. [1]

  9. M1905 bayonet - Wikipedia

    en.wikipedia.org/wiki/M1905_bayonet

    The Model of 1905 bayonet was made for the U.S. M1903 Springfield rifle. [1] This designation was changed to Model 1905 in 1917, and then to M1905 in 1925, when the army adopted the M designation nomenclature. The M1905 bayonet has a 16 in (41 cm) steel blade and a 4 in (10 cm) handle with wooden or plastic grips.