Since none of the 22 conversions state that they will in fact fit my T-3, DW CCO or any of the CCO sized models where there's a Commander slide and Officer frame, I did more checking. To my surprise, Nighthawk has a Bob Marvel designed conversion that does fit the CCO/T3/Officer frame/Commander slide setup. Here's what I ordered (not backordered)
http://www.nighthawktactical.com/22-...ion-units.html
This is the locked barrel, target version as shown.