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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 .
A barrel processor is a CPU that switches between threads of execution on every cycle. This CPU design technique is also known as "interleaved" or "fine-grained" temporal multithreading . Unlike simultaneous multithreading in modern superscalar architectures, it generally does not allow execution of multiple instructions in one cycle.
The SIGM400 Predator is a rifle while the SIGPM400 Elite PSB is a pistol. The rifles are chambered for either 5.56×45mm NATO with 14.5-inch (37 cm), 16-inch (41 cm), 18-inch (46 cm), or 20-inch (51 cm) barrels threaded 1/2x28, or chambered for .300 AAC Blackout with 9-inch (23 cm) or 16-inch (41 cm) barrels which are threaded 5/8x24 for muzzle devices such as sound suppressors.
Accordingly, the barrel shank was enlarged to 28 mm (1.10 in) diameter with 15.88 mm (0.625 in) of threaded area at 12 threads per inch compared to previous Mauser "small shank" bolt-action designs that had 24.9 mm (0.98 in) diameter with 16.38 mm (0.645 in) of threaded area at 12 threads per inch barrel shanks for additional strength.
The barrel is threaded to fit the Ruger action threads. This way, a competent gunsmith only needs an AR-15 barrel wrench and proper headspace gauges to fit a new barrel. [14] This eliminates the need for machining by the gunsmith as with traditional barrel mounting solutions. [citation needed]
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The Glagolev-Shipunov-Gryazev GShG-7.62 (Russian: Глаголев-Шипунов-Грязев ГШГ-7,62) is a four-barreled rotary machine gun designed in the Soviet Union, similar to firearms such as the M134 Minigun.
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