The Arcturus is the second strongest gun, providing 44 attack and 10 evade. It can be bought from the Bazaar for 19,800 gil through the Late-model Rifle good, by selling Wyvern Wing x2, Yensa Fin x2, a Salamand Halcyon. It requires the Guns 5 license before it can be equipped.
In the Zodiac versions, it now provides 45 Attack, 10 Evade, 50 CT, 5% critical rate, and requires the Guns 6 license for 100 LP. It can be found as a treasure in Lhusu Mines (Site 5) or Cerobi Steppe (North Liavell Hills), or from the bazaar for 8,000 gil after selling Wyvern Wing x2, Yensa Fin x2, and Salamand Halcyon x1. It can be equipped by the Machinist and Shikari.
FFXIIRW The Arcturus is a gun that can be equipped by Balthier. It has 80 attack, 40 magic attack, and 36 attack speed. It can be purchased in Tomaj's Shop after chapter 9 for 13,000 gil, or built in the Forge after acquiring the Tiger's Tactics recipe book.
Dissidia012 The Arcturus is a gun-type weapon with a minimum level requirement of 60. It gives 54 ATK and 69 BRV to its wielder and increases their Assist Gauge's duration by 20%, but it subtracts 288 HP and 1 DEF as well. It can be purchased from the Shop by trading 130,760 gil, Aldebaran, Taharka Husk, and Sky Pirate's Dream x5.
Arcturus is the brightest star in constellation Boötes.