sight unit

sight unit

[′sīt ‚yü·nət]
(optics)
A compact sighting device composed of an elbow or panoramic telescope, mount, or adapter, usually used for pointing a weapon for direct or indirect fire; it may be attached to, or used in conjunction with, a weapon rocket launcher, or the like.
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References in periodicals archive ?
Contract notice: Supply of c2a2 of sight unit spares and associated items
The rear sight unit is drift-adjustable and has a retaining screw to affix its location.
A combination light/laser sight unit solves that problem.
The rear sight unit rides in dovetail grooves cut directly into the spring cylinder, and the notch is located too close to the eye for a sharp sight picture.
The laser beam, incidentally, is by necessity very low-level, contained completely within the sight unit and not reflected back into the user's eye.
The hand-guard will accommodate a Picatinny rail that will house the United Scientific Instruments L9A1 Sight Unit Small Arms Trilux and Pilkington Optronics' Common Weapon Sight, in addition to the Qioptiq Maxikite Night Sight.
Big, bright night sights from Kimber affiliate MeproLight would be part of the fixed front post and big rear sight unit.
On German Tiger UHT helicopters, the navigation subsystem is supplemented by a small FLIR with a 30X40-degree field of view called the Pilot Sight Unit (PSU), manufactured by Selex (Rome, Italy; formerly Galileo Avionica).
The gunner usually carries the mortar tube, bipod, sight unit, and usually two or three mortar rounds, Root said.
Modifying the sleeve bushings available from the Basic TOW makes it possible to use them for the TOW II's Integrated Sight Unit.
The kit also features a military-style nylon sling, sight adjusting tool, Allen wrench for tightening the front sight unit, magazine loader and buttstock setscrew wrench.
Your best bet is to replace the entire rear sight unit.