Citori XT Trap with Adjustable Comb Grade.The double barrel is 30" and the single barrel is 34". Its chambered in 12ga.The Citori XT Trap is a brainy shotgun with smart features muzzle to butt. Built for competition, the Citori XT Trap, Grade I is a finely tuned work of mechanical art. Classic lines, amazing ergonomics and a proven dependable design.