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The first ACOG model, known as the TA01, was released in 1987. [3] [4] An example was tested on the Stoner 93 in the early 1990s by the Royal Thai Armed Forces. [5]In 1995, United States Special Operations Command selected the 4×32 TA01 as the official scope for the M4 carbine and purchased 12,000 units from Trijicon. [6]
Scopes for ring mounts are available in many different sizes. The most common ones are: 1 inch (25.4 mm) 30 mm; 34 mm; Some less common standards are: 3 ⁄ 4 inch (19 mm) 7 ⁄ 8 inch (22 mm) 26 mm – Some older European scopes; 35 mm – Some IOR, Vortex and Leupold models; 36 mm – Some Zeiss and Hensoldt models
Vortex gun may refer to: Vortex ring gun , an experimental non-lethal weapon that uses high-energy vortex rings of gas Air vortex cannon , a toy that releases doughnut-shaped air vortices
The common tendinous ring, also known as the annulus of Zinn or annular tendon, is a ring of fibrous tissue surrounding the optic nerve at its entrance at the apex of the orbit. It is the common origin of the four recti muscles of the group of extraocular muscles. It can be used to divide the regions of the superior orbital fissure. [1]
Spark photography image of a vortex ring in flight. A vortex ring, also called a toroidal vortex, is a torus-shaped vortex in a fluid; that is, a region where the fluid mostly spins around an imaginary axis line that forms a closed loop. The dominant flow in a vortex ring is said to be toroidal, more precisely poloidal. [clarification needed]