Seal the rear of your muzzleloaders barrel with a stainless steel CVA quick-release breech plug. Made for 2010 or newer CVA Accura, Optima and Wolf muzzleloaders, for both standard powder or pellets and modified for Blackhorn 209 powder. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Color: Stainless Steel. Gender: Male. Age Group: Adult.