With Tannerite Exploding Binary Rifle Targets, you know when you hit your target! The patented Tannerite Targets will not cause a fire and cannot be initiated to explode by any method other than a center fire rifle shot. The Tannerite binary explosive compound is perfect for long-range firearms practice. Simply load a small container with Tannerite and you'll know immediately when you hit it. Because the two components of Tannerite aren't explosive until mixed, they're fully legal to purchase and ship in the USA (excluding Maryland and Tennessee) without a license.