Not sure if this is accepted as appropriate, but I’ve been looking for an Officer frame to do a future build. There are some on Gunbroker right now being marketed as Wilson Combat frames (has bulletproof ejector cut). Prices look to me like a great deal. Not sure why carbon steel would be more than stainless, but whatever. $9.95 shipping. I’m not affiliated with this seller other than being a very recent customer.
Stainless steel frame for $114.95
Carbon steel frame for $119.95