Where's a good source? I need the entire assy

I got mine from Midway but I don't see them on their website anymore. Try here.

http://www.brownells.com/aspx/NS/store/ProductDetail.as...ING%20PIN%20ASSEMBLY

You might look at a Pierce. It is the nicest that I have seen. I believe that Dave Kiff at Pacific precision makes most of them.
Butch

I bought my GreTan assemble from Brownell's.