Spare base for the Strataim Tremor BFG.Choose from 9mm or 6mm rimfire (offset / power load) blank bases. .22 charges will fit in the 6mm hole, but may require an o-ring to keep them from rattling.Screws onto the Strataim Tremor body in place of the standard .209 base.(Product Image shows the full BFG. Only the spare base will be supplied)
