Excellent point, Keith. And we got to the moon on slide rules with the most rudimentary
computers. Trig, good tools and smart folks can make almost anything. Of course, CNC
can make it faster and cheaper and easier in many cases.
This is how is it that an entire firing system subassembly for a S&W M&P .45 auto handgun
sells for $26 retail.
I discovered this when trying to buy the tiny spring that holds the
trigger bar sideways when removing the magazine safety (option) on mine.