A2 scope

"Huh... my ass! You can forget about your A2 Scope, too..."

- A Master Gunnery Sergeant to Johnson.

Not much is known about the A2 Scope, but that it was most likely a weapons attachment and was mentioned by "Master Gunns" during The Armory. "Master Guns" had said that Avery Johnson would would not be receiving one from him for not telling him how he survived the detonation of Alpha Halo.