Got one, rather my daughter confiscated it, but its a fine little rifle. The Tracker has a lugged breech plug with a large raised bar across its face. Imho its the best design for the purpose. The large slot engages the breechplug and the other end of the tool has a cut out for removing/installing the nipple. They are available from Traditions as the Tracker is still in production. I converted mine to use caps instead of 209's and they work perfectly. Its an accurate rifle too. Sub 3 inch 100 yard groups are as common as crooked politicians. As far as BH209, don't bother. Its been said often enough experience and the manufacturer specifically state not to use BH209 in striker fired inlines. You either won't get ignition or you'll be picking parts of primers out of yourself.There are those who claim success, but don't do it. If you pull charges of loose powder, a way to keep powder out of your breech threads is to ram a wad of cloth down the barrel after you pull the ball and dump powder. This will push the leftover powder in to the plug and trap it there, keeping it out of the threads. Good luck and enjoy your rifle!