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After World War II Leupold & Stevens began making gun scopes after Marcus Leupold failed to hit a deer with his rifle. His scope fogged up and he is reported to have exclaimed "Hell! I could build a better scope than this!" as the deer bounded off. [3] [4] In 1962, Leupold invented the Duplex Reticle, which most riflescopes now use. [6]
The BORS mounted atop a Leupold Mark 4 M1. The computer built into the BORS, constantly updates to account for changing factors. Barrett states that the BORS "instantly takes care of the data work so the shooter can focus on the task of putting lead on target."
For example, with a typical Leupold brand 16 minute of angle (MOA) duplex reticle (similar to image B) on a fixed-power telescopic sight, the distance from post to post, between the heavier lines of the reticle spanning the center of the sight picture, is approximately 32 inches (810 millimeters) at 200 yards (180 m), or, equivalently ...
A Leupold telescopic sight mounted on a dovetailed rifle receiver via two scope rings From left: A sketch of a cross section on a Zeiss rail and ring mount, both with a Picatinny rail interface. Scope mounts are rigid implements used to attach (typically) a telescopic sight or other types of optical sights onto a firearm .
Ambient lighting of the reticle was improved by placing it facing up and bouncing it off a relay mirror then off a concave collimating mirror Prototype of the Grubb reflector sight attached to a rifle. The idea of a reflector sight originated in 1900 with Irish optical designer and telescope maker Howard Grubb in patent No.12108.
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Both AN/PAS-13Bs have programmable reticles, allowing the user to match the reticle to the weapon system the sight will be mounted on. Some reticles included in the sight include those designed for the M16 rifle, M4 carbine, M60 machine gun, M240 machine gun, M249, M2 machine gun, MK19, MK47, M24 sniper weapon system, and the GAU-21. The sight ...
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