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Fire from the eight machine guns of a Hawker Hurricane is shown converging to a point, then diverging. (Drawing not to scale.) In aerial gunnery, gun harmonisation, convergence pattern, convergence zone, convergence point or bore-sight point refers to the aiming of fixed guns or cannon carried in the wings of a fighter aircraft.
Wingo was an experimental indoor wing shooting sport invented by the Winchester-Western Division of the Olin Corporation in the early 1970s. [1] [2] The only Wingo facility built was in San Diego, California and was in operation during 1971. [3] It was a family friendly sport enjoyed by men, women and children. Competing teams were organized ...
In finance, survivorship bias is the tendency for failed companies to be excluded from performance studies because they no longer exist. It often causes the results of studies to skew higher because only companies that were successful enough to survive until the end of the period are included.
A view through a Tasco ProPoint red dot sight. The mid- to late 1970s saw the introduction of what are usually referred to as red dot sights, a type that gives the user a simple bright red dot as an aiming point. [27] The typical configuration for this sight is a compact curved mirror reflector design with a red light-emitting diode (LED) at ...
Sight magnifiers are optical telescopes that provide increased magnification to a shooter's view when they are engaged. They are commonly mounted behind red dot and holographic sights that produce a collimated reticle image. Most have mounts which allow them to flip to the side when not in use, though immobile mounts exist as well. [2]
[16] [35] The HC-14-62 has a polymer housing and uses a forward-aimed fiber optic collector to illuminate the white daytime reticle, which consists of a large circle of about 180 minutes of arc (MOA), with a 20 MOA circle surrounding a 3.5 MOA dot in the center. The MC-10-80 has an anodized aluminium housing, and has a similar black reticle.
The squadron was assigned to the Twentieth Air Force, 301st Fighter Wing. The squadron served as part of the occupation force and provided air defense for Okinawa and the Ryukyu Islands until 1955, the 26th Fighter Interceptor Squadron Deployed to Tainan Air Base, Taiwan from 3 March – 2 April 1955. Pilots engaging in combat operations in ...
Rifles come with various safeties. Some use a cross-bolt safety button, others a wing safety at the rear, or even a "half-cock" notch (such as found on older lever-action rifles). The Winchester Model 94 originally utilized a "half-cock" notch safety but the design was revised in 1983 due to numerous inadvertent discharges.