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 scoped weapon attachment and was mentioned by "Master Gunns" during The Armory Level on Halo 2. "Master Guns" had said that Avery Johnson would would not be receiving said device after he inquired on how he had survived the detonation of Alpha Halo.