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The scope base is the attachment interface on the rifle's receiver, onto which the scope rings or scope mount are fixed. Early telescopic sights almost all have the rings that are fastened directly into tapped screw holes on the receiver, hence having no additional scope base other than the receiver top itself.
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]
Accordingly, Romania designed the PSL rifle as a substitute for the SVD Dragunov, and IOR was tasked with developing a scope for the rifle as a replacement for the Russian PSO-1. The result was the LPS 4x6° TIP2 telescopic sight, which became the standard Romanian sniper riflescope. The company is traded on the Bucharest Stock Exchange.
Unertl Optical Company, Inc. was a manufacturer of telescopic sights in the United States from 1928 until 2008. They are known for their 10× fixed-power scopes that were used on the Marine Corps' M40 rifle and made famous by Marine Corps Scout Sniper Carlos Hathcock during the Vietnam War.
M145 Machine Gun Optic fitted to a M240B machine gun. The M145 Machine Gun Optic is a variant of the C79 that was developed for the U.S. Army and is commonly mounted on M240 and M249 machine guns. The M145 is unusual when compared with other optical sights in use with the United States military in that ballistic compensation is in the mount ...
The scope body is sealed and filled with nitrogen, which prevents fogging of optics and was designed to function within a -50 °C to 50 °C temperature range. For zeroing the telescopic sight the reticle can be adjusted by manipulating the elevation and windage turrets in 5 centimetres (2.0 in) at 100 metres (109 yd) (0.5 mil or 1.72 MOA ...
Surveying equipment, rifle scopes, and related products are sold under the "Leupold" name, while water monitoring instrumentation, such as level and flow recorders, are marketed under the "Stevens" brand. [5] After World War II Leupold & Stevens began making gun scopes after Marcus Leupold failed to hit a deer with his rifle. His scope fogged ...
Some service rifles used by Soviet and Warsaw Pact nations armed forces have a distinct type of side-mounted scope, informally known as a Warsaw Pact rail. [7] The mount is found on the left side of the rifle receiver, with machined cutouts for reduced weight and ease of installation; an example is the PSO-1 optical sight.