COMPLETE Seal Kit for Benjamin Marauder Phase 2 air Rifle. We believe it will also fit the Phase one guns. It has both a .177 and .22 Breech seal O-ring . Included are CRS1763-026 (4), CRS1763-058, CRS1761A023 (2), CRS2563-061, CRSJTX-080 (2), BEN397-036, CRS190B008, and CRS1700-140.