I bought my Buck Mark about two years ago and the manual tells me how to break it down. Browning probably stopped printing that info because they got too many phone calls asking for little clips and whatnot that got shot across the room and lost. I know I called them.
Browning is just trying to save themselves some headaches from every new owner calling them.
If you're interested in those instructions, PM or email me and I'll get them to you.