The Advanced Combat Optical Gunsight is a series of prismatic telescopic sights manufactured by Trijicon. The ACOG was originally designed to be used on the M16 rifle and M4 carbine, but Trijicon has
The TA31RCO variant of the ACOG is designated as the M150 RCO in United States Army service.
Down-range ACOG sight picture
USMC-spec M16A4 fitted with ACOG, vertical foregrip, and AN/PVQ-31
Latvian soldiers using a Heckler & Koch G36 rifle attached with Trijicon ACOG
SUSAT
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The Sight Unit Small Arms, Trilux, or SUSAT, is a 4× telescopic sight, with tritium-powered illumination utilised at dusk or dawn. The full name of the current model is the SUSAT L9A1. The sight is no
Advanced Combat Optical Gunsight
…Sight (device) SUSAT, British 4× telescopic sight with tritium-powered illumination similar to the ACOG Specter…
Trilux Small Arms Sight Unit
Sight attached to an L85A2
View through a SUSAT.