It would appear that what you have is what military collectors call a "Mixmaster". So think of what it would cost to find, buy and assemble all of those parts into a working gun p, and you came out way ahead @ $400!
For us old timers who remember when guns had prices ranging from 10-50% of what we see today, it's hard to justify the numbers we see today, but in the current market, any S&W firearm, complete and working is worth a serious look at anything under $4-500. Just my dos centavos!
Froggie