Editing SA80 (section)

===Sights===
[[File:Susat1.jpg|thumb|A view through a SUSAT sight.]]

Initially, rifles used by the [[Royal Marines]], [[British Army]] infantry soldiers (and other soldiers with a dismounted close combat role) and the [[RAF Regiment]] are equipped with a [[SUSAT]] (Sight Unit Small Arms, Trilux) optical sight, with a fixed 4× magnification and an illuminated aiming pointer powered by a variable [[tritium]] light source (as of 2006 almost all British Army personnel deployed on operations have been issued SUSATs); this is also the standard sighting arrangement for the LSW variant. Mounted on the SUSAT's one-piece, pressure [[Die casting|die-cast]] aluminium body are a set of back-up [[iron sight]]s that consist of a front blade and small rear aperture. Rifles used with other branches of the armed forces when not on operations are configured with fixed iron sights, consisting of a flip rear aperture housed inside the carrying handle and a forward post vertical blade foresight, installed on a bracket above the gas block. The rear sight can be adjusted for windage, and the foresight—elevation. In place of the SUSAT, a passive night vision CWS scope can be used.<ref name=AC71374/>

More recently, weapons used by some Royal Marines, Infantry, RAF Regiment, [[Ministry of Defence Police]] and soldiers with a dismounted close combat role in operations in Afghanistan have had the SUSAT replaced with the [[Trijicon]] [[Advanced Combat Optical Gunsight]] (ACOG).{{sfn|Grant|2016}}{{page needed|date=July 2019}} In 2011, the Ministry of Defence began issuing [[ELCAN Optical Technologies|ELCAN]] SpecterOS 4× Lightweight Day Sights (LDS) in an effort to replace ageing SUSAT units across the British Armed Forces, forming the first stage of the [[Future Integrated Soldier Technology|FIST]] infantry enhancement project.<ref>{{cite web|url=https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/33829/desider_36_May2011.pdf|title=Desider magazine – Issue 36|date=May 2011|publisher=[[Ministry of Defence (United Kingdom)]]}}</ref> In order to mount the new sight, the weapon has been provided with an adapter to convert the existing sight rail to the [[Picatinny rail|Picatinny]] standard, in keeping with the updated handguard. The FIST project has also seen upgrades to the existing [[Thales Optronics|Qioptiq]] CWS (4×) and Maxi-Kite (6×) night vision scopes, and the introduction of the FIST Thermal Sight, following operational experience with the VIPIR-2+ thermal weapon sight in Afghanistan. All of the new FIST weapon sights have the capacity to accept Shield's Close Quarter Battlesight reflex sight.<ref>{{cite web|url=https://shieldpsd.sharepoint.com/Pages/CQB.aspx|title=Shield CQB|access-date=23 December 2014}}</ref>