The BM 300 doesn't look like it has enough detent strength to build up enough energy for proper deployment without wrist flicking; a downside for some.
The BM300 Axis lock has the same feel that every other Axis lock I've handled before has. As far as I can tell, it was not modified for for the flipper addition. It doesn't create the same resistance that a well executed detent does before deployment that snaps the blade to lock. The feel is softer and slower and is easy to imagine if you've ever slowly moved and Axis locked knife blade out using the thumb stud.