Admittedly I'm new to Beretta, but looked into this briefly when I got my first 92 recently.
If this works then why are people paying $150+ for conversions when that same or some other company could make a part like this?
This doesn't look like a hard part to make (and yes, I'm a machinist).
Only reason I can think of is a lack of perceived demand, but if WC and others are offering the service that doesn't seem reasonable.
What am I missing?