Lazzeroni Arms Company is a US firearms and firearm cartridge maker based in Tucson, Arizona. Lazzeroni was founded by John Lazzeroni and is known for designing and producing long range hunting rifles and high speed cartridges.

Lazzeroni rifles

Initially Lazzeroni rifles were made using Remington Model 700 actions, but due to feeding problems and concerns about the action's strength, the company subsequently used a specially modified McBros action with a custom magazine assembly. More recently, the company has used specially made SAKO actions. Lazzeroni's standard rifle, the L2000ST, has a 27 in barrel and weighs 8 lb without a scope. The company's lightweight mountain rifle, the L2000SA, has a 24 in barrel and weighs 6.5 lb without a scope.

Lazzeroni propriety cartridges

Lazzeroni has developed a series of propriety short and long, unbelted magnum cartridges. Lazzeroni propriety cartridges include: • 6.17mm Spitfire • 6.17mm Flash • 6.57mm Scramjet • 6.71mm Phantom • 6.71mm Blackbird • 7.21mm Tomohawk • 7.21mm Firebird • 7.21mm Firehawk • 7.82mm Patriot • 7.82mm Warbird • 8.59mm Galaxy • 8.59mm Titan • 9.09mm Eagle • 9.53mm Hellcat • 9.53mm Saturn • 10.57mm Maverick • 10.57mm Meteor • 12.04mm Bibamufu