Knight Disc .50 Cal Inline Muzzleloader Scope Bases With Screws. Part is from a Knight Disc .50 caliber muzzleloading rifle. Guaranteed to be genuine and original. 1 Barrel Thimble w/ Screw are in good cond. 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. Seller assumes no liabilities. Know your local laws and use a licensed gunsmith. (A)