BB Retaining Ball Spring for early Crosman models V350. Use with BB Retaining ball CRS105-039 or CRS350-099. Does not work with the Crosman M1 or 3500 or later versions of the V350,3500, and Sears 126.102940. that use ball CRS350-041. This was the first and smallest spring used for the BB Retainer on this model.
