Having developed the sheridan painball rifle for the factory and the centerfire bolts that followed in most of the other models, I can still supply spares to the industry. Usually we need the action here so we can determine exactly what bolt length it needs. Or appropriate measurements.
I have bolts for the PMI-1, Rifle, Annihilators and can shorten long bolts to suit various other applications.
We also have Delrin pumps for all the early models.