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ELCAN is perhaps best known for making the prismatic C79 optical sight that is widely used on the Colt Canada C7 and C8, FN Minimi, FN MAG and CZ-805 BREN families of firearms. The C79 is not designed as a sniper sight per se , but is rather intended to be mounted on a variety of service rifles used by regular infantrymen as well as designated ...
The optic has two standard reticles: both are a cross, feature a range finder out to 600 m (656 yd) for 5.56x45 and 800 m (875 yd) for 7.62x51, where they differ is in the bulletdrop design, where the one called CX5395/CX5396 uses circles to denote the range, while the other called CX5455/CX5456 uses lines and also features lines for windage.
These "thin-thick" crosshair reticles, known as duplex reticles, can also be used for some rough estimations if the transition point between thinner and thicker lines are at a defined distance from the center, as seen in designs such as the common 30/30 reticles (both the fine horizontal and vertical crosshair lines are 30 MOAs in length at 4× ...
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 .
A bore-sighting device is usually used to roughly zero the sight before a first-time shooter takes it to the range. Adjustments come in 0.25-mil clicks (one mil equals 10 cm at a range of 100 m, so each click adjusts the sight by 2.5 cm at 100 m). Sighting in a C79 sight is normally done at a range of 200 m.
If a rifle scope has mrad markings in the reticle (or there is a spotting scope with an mrad reticle available), the reticle can be used to measure how many mrads to correct a shot even without knowing the shooting distance. For instance, assuming a precise shot fired by an experienced shooter missed the target by 0.8 mrad as seen through an ...
Velocities for modern varmint rounds are usually in excess of 3,000 ft/s (910 m/s) such as the .223 Remington and some like the .220 Swift can exceed 4,000 ft/s (1,200 m/s). This allows long range shots with a short time of flight, and little change in trajectory at different ranges (see external ballistics). A bullet drop of only a couple of ...
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]