Information about Battlestar Raven's armaments as well as the Colonial Fleet can be found in this codex compiled by the Battlestar Gun Crews.
Faced with the devastation of the Second Cylon War, the gun crews and officers have vowed to collect and preserve all the information necessary so that the fleet will continue to be able to fend off the Cylon threat and one day, so the Gods will it, defeat them.
So Say We All!
Colonial Gunnery Codex #001
Colonial KEW-Battery "Polemos"-Pattern
Kinetic Energy Weapons (KEWs) are the Battlestar's primary means of ship-to-ship combat. They are multi-purpose weapons, used against armored targets, as anti-aircraft weaponry, and for general bombardment, utilizing a wide range of ordinance and firing modes depending on the mission profile.
The Raven's standard "Polemos"-Pattern Batteries are double-barreled turrets. The armored housing is outfitted with two barrels that move independently from each other, allowing each rifle to engage independent targets or for the whole battery to utilize tandem fire. Each turret is heavily armored and extends below deck into a secure magazine as part of the Battlestar's hull structure. Several Batteries are lined into detachments, each under the command of their own fire direction centers which receive their orders directly from the CIC.
Colonial Flak-Battery "Homados"
The turreted flak batteries are the Battlestar's primary means of perimeter defense, denying wide areas around the vessel to enemy small craft while at the same time providing adequate defense against conventional missiles and warheads.
These small-caliber gun batteries fire anti-aircraft ammunition, detonating at set ranges to create effective barriers of shrapnel and, utilizing specialized ammunition, chaff payloads.
The "Homados" pattern flak battery saw use aboard the Battlestar Raven during the early years of her service, before being replaced with the current Homados MKIV variant.