Larry has been at it again - converted a Knight Disc Elite that used the "full plastic jackets" to a #11 ignition. Shown installed with bolt open: Seems to work very well: This could make the Disc Elite/Extreme (and that use the same/similar bolt legal in some areas where 209 ignition is not allowed. Conversion is reversible by simply reinstalling a standard Knight breech plug and the original striker. No modification is done to the bolt housing. Pretty cool!