This kit will convert your Buckhunter?, Buckhunter Pro? or Buckhunter Pro? shotgun to use 209 shotgun primers as your ignition. 209 Shotgun primers are water resistant and the hottest, most reliable ignition in muzzleloading today. Once the conversion kit is installed you can use any of the three types of magnum ignition-209 primer, #11 percussion and musket caps. The conversion kit includes 1-Buckhunter? Magnum hammer, 1-Buckhunter? Magnum spring, 1-209 depriming tool, 1-Thunder Dome? breech plug, & 1-Thunder? nipple-magnum 209 adapter.