ronlaughlin;you've done some very good work on your breechplugs and i even modded one for a knight shadow kinda following your work,but i would have to disagree with you on some points,my triumph's plug has needed no mods,is blowback free,has never needed a tool to remove or insert the plug,hasn't had the rings or o-ring show any signs of wear thru 100's of rounds and lots of cleaning sessions and only gets a light lube with slip-2000 oil.your plug looks like a very nice improvement on that plug but that thin leading edge on that plug looks easily prone to damage if dropped on something hard,jmho.............karl
X2 on that and i have a lot more than 100 rds through mine.