You can explore, learn and experiment on them without worrying too much about screwing them up. Today I did a detailed disassemble of the Browning Hi-Power I got from Bud's Guns. Talk about a sense of accomplishment and a real confidence booster for gunsmithing skills! Tom (cruffler on TOS) has offered to let me use his blasting gun to strip the finish and educate me on the art of "rust bluing". What a top notch guy. Really want give props to this fellow firearms community member. Tom is taking the time to teach a curmudgeon like myself an indispensable skill. Great guy I tell you! I will update with pics and results as this project progresses. Here is the detail strip of the Browning Hi-Power.