This is a used Knight American Knight .50 caliber inline muzzleloader hammer spring. It is a replacement part for maintaining or repairing your firearm. The listing indicates it is in used condition. Free shipping is available for this item. This spring is suitable for shooters who need a specific component for their Knight .50 caliber inline muzzleloader model. As with any used part, verify compatibility with your specific firearm before purchase. The condition and fitment are important considerations. Check the listing for full details on the exact model compatibility and any further specifications. Knight American Knight .50 Cal. Inline Muzzleloader Hammer Spring (R). Condition: Used, Made in United States. Listed at 14.95 USD. Knight American Knight .50 Cal. Inline Muzzleloader Hammer Spring. Part is from a Knight American Knight .50 caliber muzzleloading rifle. Guaranteed to be genuine and original. Hammer Spring is in good condition and complete. 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. (R)