The CVA Blackhorn QR Breech Plug for Nitride muzzleloaders is specifically designed with Blackhorn or other loose powder muzzleloading propellants. Nothing affects the performance of muzzleloaders more than a clean breech plug for consistent ignition and better overall accuracy. This black oxide coated, stainless steel replacement breech plug, is designed to work with all CVA Accura V2, Optima and Wolf models, 2010 or newer. The CVA 209 breech plug allows the flash-hole to remain debris-free after repeated shots with fine, loose powder propellants.