The henry bb-rsmp base fits all current-production h006-series and h012-series.To optimize accuracy and to keep the beauty of their receivers intact henry scope mounts are mounted to the barrel.All henry scope mounts accept weaver style detachable 1" top mount rings (rings not included).Model: Big Boy 2nd Generation Picatinny-Style BaseStyle: PicatinnyMaterial: AluminumPieces: 1Mount Type: To ReceiverRings Included: No