Beretta A400 Xtreme Unico John Snow breaks down the features of the Beretta A400 XTREME Unico semi-auto shotgun. By The Editors | Published Jan 18, 2012 9:39 AM Guns Blogs SHARE John Snow breaks down the features of the Beretta A400 XTREME Unico semi-auto shotgun. Gun Shots Guns Hunting SHOT Show MORE TO READ RELATED Mossberg 940 Pro Turkey Review The Mossberg 940 Pro Turkey is a specialized, optics-ready gobbler slayer at an affordable price READ NOW RELATED How to Shoot Iron Sights Many shooters cut their teeth on .22s or BB guns with iron sights, but is there still a place for them on modern rifles and pistols? RELATED Remington 870 Fieldmaster Review: Torture Testing the Shotgun That Will Replace the Express After 35 years in production, RemArms has discontinued the Express in favor of the 870 Fieldmaster. But is this new shotgun as durable and reliable as the classic pump?