Attache Sniper

The Attache Sniper (アタッシュスナイパー) is Kamen Rider Avenger's primary weapon. It is a weapon produced by, though Gus is implied to have smuggled this weapon along with the he uses to transform. Despite being a sniper rifle, it's only default form is a submachine gun mode, and it requires the ShotRiser to combine with the Attache Sniper to turn it into its intended sniper mode.