CVA QRBP Breech Plug Black Blackhorn Accura Optima Wolf 50 and 45 CalCVA QRBP Breech Plug Black Blackhorn Accura Optima Wolf 50 and 45 Cal Made for both loose powder and pelletized propellents; Makes removing and cleaning a muzzleloader quick and easy; Available in Black Blackhorn Accura Optima Wolf 50 & 45 Cal., Silver Accura Optima Wolf 50 & 45 Cal., Silver Blackhorn Accura Optima Wolf 50 & 45 Cal. Item Category Code: 3600 Product Group Code: 3600B Product Sub Group 1: 3600B7 Inactive: No Prop65 Applies: Yes Prop65