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  2. Boresight (firearm) - Wikipedia

    en.wikipedia.org/wiki/Boresight_(firearm)

    The user then adjusts the iron sights or scope reticle to align the point of aim with the projected laser dot. Another more commonly used type of laser boresighter is attached to the muzzle of the barrel, either inserted straight into the bore ("arbor" type) or held in alignment with the barrel via a magnet, and projects a laser beam onto the ...

  3. Laser sight - Wikipedia

    en.wikipedia.org/wiki/Laser_sight

    A USAF Airman using an M4 carbine with an AN/PEQ-15 laser sight U.S. Army 82nd Airborne Division using IR laser sights seen through a night vision device on a training exercise in Iraq. The use of laser sights is associated with increased accuracy in general, increasing the probability of hitting the target especially in low light conditions.

  4. Rifleman's rule - Wikipedia

    en.wikipedia.org/wiki/Rifleman's_rule

    There is a device that is mounted on the rifle called a sight. While there are many forms of rifle sight, they all permit the shooter to set the angle between the bore of the rifle and the line of sight (LOS) to the target. Figure 2 illustrates the relationship between the LOS and bore angle.

  5. Boresight - Wikipedia

    en.wikipedia.org/wiki/Boresight

    Boresight (firearm), adjustments made to an optical sight, to align the barrel of a firearm with the sights Boresight point, also known as gun harmonisation , the alignment of weapons in an aircraft Project Boresight , a US radio direction finding system

  6. 1951 USAF resolution test chart - Wikipedia

    en.wikipedia.org/.../1951_USAF_resolution_test_chart

    A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens.

  7. M252 mortar - Wikipedia

    en.wikipedia.org/wiki/M252_mortar

    Mortar team carrying (L-R) the mount, the baseplate and sight, and the cannon for an M252A2 system The M252 system weighs 91 lb (41 kg) completely assembled and is composed of the M253 Cannon (35 lb (16 kg)), M177 Mount (27 lb (12 kg)), M3A1 Baseplate (29 lb (13 kg)), and the M64A1 Sight Unit (2.5 lb (1.1 kg)). [ 1 ]

  8. Advanced Combat Optical Gunsight - Wikipedia

    en.wikipedia.org/wiki/Advanced_Combat_Optical...

    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]

  9. Milliradian - Wikipedia

    en.wikipedia.org/wiki/Milliradian

    A milliradian (SI-symbol mrad, sometimes also abbreviated mil) is an SI derived unit for angular measurement which is defined as a thousandth of a radian (0.001 radian). ). Milliradians are used in adjustment of firearm sights by adjusting the angle of the sight compared to the barrel (up, down, left, or