hey all, i got a buddy with an old blued steel pistol than he wants to have parkerized. parkerizing is easy but we'd have to have a guy in a local shop do the bead blasting. i was just curious, do i need to COMPELTELY take down the pistol, so there is absolutely nothing in the slide or frame, or can i simply remove the slide, take out the barrel and do the frame and slide like that? thanks!