Thompson Center Express Black Diamond. Inline Muzzleloader Barrel Without a breech. Part is from a T/C Model Express Black Diamond. 50 caliber muzzleloading rifle. Guaranteed to be genuine and original. Barrel is in very good condition. Breech plug not included. Photos are of the actual item you will receive. Please, examine the photos and if you have any questions about the listing or need additional photos, contact me. Know your local laws and use a licensed gunsmith.