Sentry autocannon

The Sentry autocannon is a line of naval coilguns used by the UNSC Navy during and after the Human-Covenant War.

M60 Sentry
The M60 Sentry was a variant of the Sentry autocannon mounted on the, , and the.

M66 Sentry
The M66 Sentry was mounted on the and. The was also retrofitted with them in preparation for Operation: RED FLAG.