No problems whatsoever with the breech plug as of yet.i have read some had problems with removing them after a shooting session. easy fix would be to break the seal and just reseal it. hell even if u had to wipe plug off real quick and reapply some grease, not a big deal. there is 0 blow by with this breech plug and the primer area of the rifle is always clean as a whistle.whats not to like?